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# -*- perl -*- |
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# Copyright (c) 2002 by Jeff Weisberg |
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# Author: Jeff Weisberg |
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# Date: 2002-Nov-01 16:11 (EST) |
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# Function: draw strip charts |
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# |
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# $Id: Strip.pm,v 1.22 2011/11/11 00:38:11 jaw Exp $ |
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$Chart::Strip::VERSION = "1.08"; |
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=head1 NAME |
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Chart::Strip - Draw strip chart type graphs. |
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=head1 SYNOPSIS |
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use Chart::Strip; |
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my $ch = Chart::Strip->new( |
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title => 'Happiness of our Group', |
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# other options ... |
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); |
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$ch->add_data( $davey_data, { style => 'line', |
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color => 'FF0000', |
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label => 'Davey' } ); |
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$ch->add_data( $jenna_data, { style => 'line', |
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color => '00FF88', |
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label => 'Jenna' } ); |
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print $ch->png(); |
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=head1 DESCRIPTION |
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The Chart::Strip package plots data values versus time graphs, such as |
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used for seismographs, EKGs, or network usage reports. |
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It can plot multiple data sets on one graph. It offers several |
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styles of plots. It automatically determines the proper ranges |
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and labels for both axii. |
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=head1 USAGE |
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=head2 Create the Chart |
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48
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$chart = Chart::Strip->new(); |
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$chart = Chart::Strip->new( |
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option1 => value, |
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option2 => value, |
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); |
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54
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If no options are specified, sensible default values will be used. |
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The following options are recognized: |
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57
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=over 4 |
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59
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=item C |
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61
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The width of the image |
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63
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=item C |
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65
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The height of the image. |
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67
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=item C |
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69
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The title of the graph. Will be placed centered at the top. |
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71
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=item C |
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73
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The label for the x axis. Will be placed centered at the bottom. |
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75
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=item C |
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The label for the y axis. Will be placed vertically along the left side. |
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79
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=item C |
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81
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Should a grid be drawn on the graph? |
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83
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=item C |
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85
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Should a border be drawn around the edge of the image? |
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87
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=item C |
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89
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Should value labels be shown? |
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91
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=item C |
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93
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Should each data set be labeled? |
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95
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=item C |
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Should the background be transparent? |
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99
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=item C |
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101
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Should the grid be drawn over the data (1) or below the data (0)? |
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103
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=item C |
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105
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Use powers of 2 instead of powers of 10 for the y axis labels. |
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107
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=item C |
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109
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Style for drawing the graph labels. C or C |
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111
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=item C |
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113
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Thickness of lines in pixels. (Requires GD newer than $VERSION). |
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115
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=item C |
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117
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Don\'t draw a line into or out of a datapoint whose value is undefined. |
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If false, undefined values are treated as though they were 0. |
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120
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=item C |
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122
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Width of boxes for box style graphs. The width may also be specified as C |
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in the data options or per point. If no width is specified a reasonable default is used. |
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125
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=back |
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127
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=head2 Adding Data |
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129
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$chart->add_data( $data, $options ); |
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131
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The data should be an array ref of data points. Each data point |
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should be a hash ref containing: |
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134
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{ |
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time => $time_t, # must be a unix time_t |
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value => $value, # the data value |
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color => $color, # optional, used for this one point |
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} |
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140
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or, range style graphs should contain: |
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{ |
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time => $time_t, # must be a unix time_t |
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min => $low, # the minimum data value |
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max => $high, # the maximum data value |
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color => $color, # optional, used for this one point |
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} |
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149
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and the options may contain: |
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151
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{ |
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style => 'line', # graph style: line, filled, range, points, box |
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color => 'FF00FF', # color used for the graph |
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label => 'New England', # name of the data set |
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} |
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157
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points style graphs may specify the point diameter, as C |
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159
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box style graphs may specify the box width, as C |
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161
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line and filled graphs may specify a C parameter, to connect |
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points using smooth curves instead of straight lines. A value of C<1> |
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is recommended, larger values will be less smooth. |
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165
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line, points, box, and filled graphs may specify a drop shadow, |
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consisting of a hashref containing C, C, C, and optionally, C |
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168
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shadow => { dx => 3, dy => 3, dw => 3, color => 'CCCCCC' } |
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170
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171
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=head2 Outputing The Image |
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173
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=over 4 |
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175
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=item $chart->png() |
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177
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Will return the PNG image |
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179
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=item $chart->jpeg() |
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181
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Will return the jpeg image |
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183
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=item $chart->gd() |
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185
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Will return the underlying GD object. |
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187
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=back |
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189
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=cut |
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; |
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191
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192
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package Chart::Strip; |
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3
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use GD; |
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0
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0
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194
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use Carp; |
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use POSIX; |
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use strict; |
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198
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my $LT_HM = 1; # time |
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my $LT_HR = 2; # time/day |
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my $LT_DW = 3; # day/date |
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my $LT_DM = 4; # date/yr |
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my $LT_YR = 5; # year |
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204
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my $MT_NO = 0; # none |
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my $MT_HR = 1; # hrs |
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my $MT_MN = 2; # midnight |
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my $MT_SU = 3; # sunday |
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my $MT_M1 = 4; # 1st |
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my $MT_Y1 = 5; # new years |
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sub new { |
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my $class = shift; |
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my %param = @_; |
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215
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my $me = bless { |
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width => 640, |
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217
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height => 192, |
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218
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margin_left => 8, |
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margin_bottom => 8, |
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220
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margin_right => 8, |
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221
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margin_top => 8, |
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222
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n_y_tics => 4, # aprox. |
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224
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transparent => 1, |
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225
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grid_on_top => 1, |
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226
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draw_grid => 1, |
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227
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draw_border => 1, |
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228
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draw_tic_labels => 1, |
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draw_data_labels => 1, |
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limit_factor => 0, |
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data_label_style => 'text', # or 'box' |
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thickness => 1, |
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tm_time => \&POSIX::localtime, # or gmtime, or... |
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shadow_color => '#CCCCCC', |
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# GD can only antialias on a truecolor image, and only if thickness==1 |
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# yes, I know what the GD documentation says. I also know what the src says... |
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antialias => 0, |
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truecolor => 0, |
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# title |
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# x_label |
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# y_label |
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# user specified params override defaults |
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%param, |
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}, $class; |
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$me->adjust(); |
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251
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my $im = GD::Image->new( $me->{width}, $me->{height}, $me->{truecolor} ); |
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$me->{img} = $im; |
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# Nor long the sun his daily course withheld, |
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# But added colors to the world reveal'd: |
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# When early Turnus, wak'ning with the light, |
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# -- Virgil, Aeneid |
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# allocate some useful colors, 1st is used for bkg |
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my $bkg = $me->color({ color => $me->{background_color} }) if $me->{background_color}; |
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$me->{color}{white} = $im->colorAllocate(255,255,255); |
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$me->{color}{black} = $im->colorAllocate(0,0,0); |
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$me->{color}{blue} = $im->colorAllocate(0, 0, 255); |
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$me->{color}{red} = $im->colorAllocate(255, 0, 0); |
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$me->{color}{green} = $im->colorAllocate(0, 255, 0); |
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$me->{color}{gray} = $im->colorAllocate(128, 128, 128); |
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267
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# style for grid lines |
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$im->setStyle(gdTransparent, $me->{color}{gray}, gdTransparent, gdTransparent); |
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270
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$im->interlaced('true'); |
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$im->transparent($me->{color}{white}) |
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if $me->{transparent}; |
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274
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$im->filledRectangle( 0, 0, $me->{width}-1, $me->{height}-1, ($bkg || $me->{color}{white})); |
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275
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276
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my $bc = $me->{border_color} ? $me->img_color($me->{border_color}) : $me->{color}{black}; |
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278
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$im->rectangle(0, 0, $me->{width}-1, $me->{height}-1, $bc ) |
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279
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if $me->{draw_border}; |
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280
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281
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$me; |
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282
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} |
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283
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284
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sub add_data { |
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285
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my $me = shift; |
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286
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my $data = shift; |
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287
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my $opts = shift; |
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288
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289
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$me->analyze( $data, $opts ); |
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290
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291
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unless( $opts->{style} ){ |
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292
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$opts->{style} = defined $data->[0]{min} ? 'range' : 'line'; |
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293
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} |
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294
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295
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push @{$me->{data}}, {data => $data, opts => $opts}; |
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296
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$me->{has_shadow} = 1 if $opts->{shadow}; |
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297
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298
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$me; |
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299
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} |
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300
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301
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# A plot shall show us all a merry day. |
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302
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# -- Shakespeare, King Richard II |
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303
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sub plot { |
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304
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my $me = shift; |
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305
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306
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return unless $me->{data}; |
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307
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return if $me->{all_done}; |
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308
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309
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$me->adjust(); |
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310
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$me->clabels(); |
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311
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$me->xlabel(); |
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312
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$me->ylabel(); |
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313
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$me->title(); |
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314
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315
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if( $me->{draw_tic_labels} ){ |
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316
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# move margin for xtics before we do ytics |
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317
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$me->{margin_bottom} += 12; |
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318
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$me->adjust(); |
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319
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} |
|
320
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321
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$me->ytics(); |
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322
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$me->xtics(); |
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323
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324
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# draw shadows |
|
325
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foreach my $d ( @{$me->{data}} ){ |
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326
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next unless $d->{opts}{shadow}; |
|
327
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$me->plot_data( $d->{data}, $d->{opts}, $d->{opts}{shadow} ); |
|
328
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} |
|
329
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330
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$me->axii(); |
|
331
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$me->drawgrid() unless $me->{grid_on_top}; |
|
332
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333
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# plot |
|
334
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foreach my $d ( @{$me->{data}} ){ |
|
335
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$me->plot_data( $d->{data}, $d->{opts}, undef ); |
|
336
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} |
|
337
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338
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$me->drawgrid() if $me->{grid_on_top}; |
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339
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340
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$me->{all_done} = 1; |
|
341
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$me; |
|
342
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} |
|
343
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|
344
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345
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# The axis of the earth sticks out visibly through the centre of each and every town or city. |
|
346
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|
# -- Oliver Wendell Holmes, The Autocrat of the Breakfast-Table |
|
347
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sub axii { |
|
348
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my $me = shift; |
|
349
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my $im = $me->{img}; |
|
350
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|
351
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# draw axii |
|
352
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$im->line( $me->xpt(-1), $me->ypt(-1), $me->xpt(-1), $me->ypt($me->{ymax}), $me->{color}{black}); |
|
353
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$im->line( $me->xpt(-1), $me->ypt(-1), $me->xpt($me->{xmax}), $me->ypt(-1), $me->{color}{black}); |
|
354
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|
355
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|
# 'Talking of axes,' said the Duchess, 'chop off her head!' |
|
356
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|
# -- Alice in Wonderland |
|
357
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$me; |
|
358
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} |
|
359
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|
360
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|
sub set_thickness { |
|
361
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|
|
my $me = shift; |
|
362
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|
my $tk = shift; |
|
363
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|
my $im = $me->{img}; |
|
364
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|
365
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|
|
# not available until gd 2.07 |
|
366
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|
|
return unless $im->can('setThickness'); |
|
367
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|
|
$im->setThickness($tk); |
|
368
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} |
|
369
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|
370
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|
sub gd { |
|
371
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|
|
my $me = shift; |
|
372
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|
373
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|
|
$me->plot(); |
|
374
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|
|
$me->{img}; |
|
375
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|
|
} |
|
376
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|
377
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|
|
sub png { |
|
378
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|
|
my $me = shift; |
|
379
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|
380
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|
|
$me->plot(); |
|
381
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|
|
$me->{img}->png( @_ ); |
|
382
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|
} |
|
383
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|
384
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|
|
sub jpeg { |
|
385
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|
|
my $me = shift; |
|
386
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|
387
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|
|
$me->plot(); |
|
388
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|
|
$me->{img}->jpeg( @_ ); |
|
389
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|
} |
|
390
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|
391
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|
392
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|
|
# xpt, ypt - convert graph space => image space |
|
393
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|
|
sub xpt { |
|
394
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|
|
my $me = shift; |
|
395
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|
|
my $pt = shift; |
|
396
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|
397
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|
|
$pt + $me->{margin_left}; |
|
398
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|
|
} |
|
399
|
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|
400
|
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|
|
sub ypt { |
|
401
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|
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|
|
my $me = shift; |
|
402
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|
|
my $pt = shift; |
|
403
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|
404
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|
|
# make 0 bottom |
|
405
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|
|
$me->{height} - $pt - $me->{margin_bottom}; |
|
406
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|
|
} |
|
407
|
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|
408
|
|
|
|
|
|
|
# xdatapt, ydatapt - convert data space => image space |
|
409
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|
|
sub xdatapt { |
|
410
|
|
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|
|
my $me = shift; |
|
411
|
|
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|
|
my $pt = shift; |
|
412
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|
413
|
|
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|
|
$me->xpt( ($pt - $me->{xd_min}) * $me->{xd_scale} ); |
|
414
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|
|
} |
|
415
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|
416
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|
|
sub ydatapt { |
|
417
|
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|
|
my $me = shift; |
|
418
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|
|
my $pt = shift; |
|
419
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|
420
|
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|
|
$pt = $pt < $me->{yd_min} ? $me->{yd_min} : $pt; |
|
421
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|
|
$pt = $pt > $me->{yd_max} ? $me->{yd_max} : $pt; |
|
422
|
|
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|
423
|
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|
|
$me->ypt( ($pt - $me->{yd_min}) * $me->{yd_scale} ); |
|
424
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|
|
} |
|
425
|
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|
426
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|
|
sub adjust { |
|
427
|
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|
|
my $me = shift; |
|
428
|
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|
429
|
|
|
|
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|
|
# I have touched the highest point of all my greatness; |
|
430
|
|
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|
|
# -- Shakespeare, King Henry VIII |
|
431
|
|
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|
|
$me->{xmax} = $me->{width} - $me->{margin_right} - $me->{margin_left}; |
|
432
|
|
|
|
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|
|
$me->{ymax} = $me->{height} - $me->{margin_bottom} - $me->{margin_top} ; |
|
433
|
|
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|
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|
434
|
|
|
|
|
|
|
if( $me->{data} ){ |
|
435
|
|
|
|
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|
|
$me->{xd_scale} = ($me->{xd_min} == $me->{xd_max}) ? 1 |
|
436
|
|
|
|
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|
|
: $me->{xmax} / ($me->{xd_max} - $me->{xd_min}); |
|
437
|
|
|
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|
438
|
|
|
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|
|
$me->{yd_scale} = ($me->{yd_min} == $me->{yd_max}) ? 1 |
|
439
|
|
|
|
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|
|
: $me->{ymax} / ($me->{yd_max} - $me->{yd_min}); |
|
440
|
|
|
|
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|
|
} |
|
441
|
|
|
|
|
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|
442
|
|
|
|
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|
|
$me; |
|
443
|
|
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|
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|
|
} |
|
444
|
|
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|
|
445
|
|
|
|
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|
|
sub analyze { |
|
446
|
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|
my $me = shift; |
|
447
|
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|
my $data = shift; |
|
448
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|
my $opts = shift; |
|
449
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|
my( $st, $et, $pt, $min, $max ); |
|
450
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|
451
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$st = $data->[0]{time}; # start time |
|
452
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|
$et = $data->[-1]{time}; # end time |
|
453
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$pt = $st; |
|
454
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|
455
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foreach my $s (@$data){ |
|
456
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|
croak "data point out of order" if $s->{time} < $pt; |
|
457
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my $a = defined $s->{min} ? $s->{min} : $s->{value}; |
|
458
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my $b = defined $s->{max} ? $s->{max} : $s->{value}; |
|
459
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$a ||= 0 unless $me->{skip_undefined} || $opts->{skip_undefined}; |
|
460
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$b ||= 0 unless $me->{skip_undefined} || $opts->{skip_undefined}; |
|
461
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($a, $b) = ($b, $a) if $a > $b; |
|
462
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|
463
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$min = $a if defined($a) && ( !defined($min) || $a < $min ); |
|
464
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$max = $b if defined($b) && ( !defined($max) || $b > $max ); |
|
465
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$pt = $s->{time}; |
|
466
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} |
|
467
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|
468
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|
if( $opts->{style} eq 'box' ){ |
|
469
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|
|
# stretch x axis if drawing wide boxes |
|
470
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|
my $defwid = def_box_width($st, $et, scalar(@$data)); |
|
471
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|
my $w = $data->[0]{width} || $opts->{width} || $me->{boxwidth} || $defwid; |
|
472
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|
$st -= $w/2; |
|
473
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|
474
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|
$w = $data->[-1]{width} || $opts->{width} || $me->{boxwidth} || $defwid; |
|
475
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|
$et += $w/2; |
|
476
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|
477
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|
|
# boxes are drawn from y=0 |
|
478
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|
$min = 0 if $min > 0; |
|
479
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|
} |
|
480
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|
481
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|
if( $opts->{smooth} || $me->{smooth} ){ |
|
482
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|
|
# calculate derivative at each point (which may or may not be evenly spaced) |
|
483
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|
|
for my $i (0 .. @$data-1){ |
|
484
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|
my $here = $data->[$i]; |
|
485
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|
my $left = $i ? $data->[$i-1] : $data->[$i]; |
|
486
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|
my $right = ($i!=@$data-1) ? $data->[$i+1] : $data->[$i]; |
|
487
|
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|
488
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|
|
my $dxl = $here->{time} - $left->{time}; |
|
489
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|
my $dxr = $right->{time} - $here->{time}; |
|
490
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|
|
my $dyl = $here->{value} - $left->{value}; |
|
491
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|
|
my $dyr = $right->{value} - $here->{value}; |
|
492
|
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|
493
|
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|
|
if( $dxr && $dxl ){ |
|
494
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|
|
my $dl = $dyl / $dxl; |
|
495
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|
|
my $dr = $dyr / $dxr; |
|
496
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|
|
if( $dl < 0 && $dr > 0 || $dl > 0 && $dr < 0 ){ |
|
497
|
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|
|
# local extrema |
|
498
|
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|
|
$data->[$i]{dydx} = 0; |
|
499
|
|
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|
|
|
}else{ |
|
500
|
|
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|
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|
|
my $dm = ( $dl * $dxr + $dr * $dxl ) / ($dxr + $dxl); |
|
501
|
|
|
|
|
|
|
# mathematicaly, $dm is the best estimate of the derivative, and gives the smoothest curve |
|
502
|
|
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|
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|
|
# but, this way looks nicer... |
|
503
|
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|
|
my $d = (sort { abs($a) <=> abs($b) } ($dl, $dr, $dm))[0]; |
|
504
|
|
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|
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|
|
$data->[$i]{dydx} = ($d + $dm) / 2; |
|
505
|
|
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|
|
|
|
} |
|
506
|
|
|
|
|
|
|
}elsif($dxr){ |
|
507
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|
|
|
$data->[$i]{dydx} = $dyr / $dxr; |
|
508
|
|
|
|
|
|
|
}elsif($dxl){ |
|
509
|
|
|
|
|
|
|
$data->[$i]{dydx} = $dyl / $dxl; |
|
510
|
|
|
|
|
|
|
} |
|
511
|
|
|
|
|
|
|
} |
|
512
|
|
|
|
|
|
|
} |
|
513
|
|
|
|
|
|
|
|
|
514
|
|
|
|
|
|
|
$me->{xd_min} = $st if $st && (!defined($me->{xd_min}) || $st < $me->{xd_min}); |
|
515
|
|
|
|
|
|
|
$me->{xd_max} = $et if $et && (!defined($me->{xd_max}) || $et > $me->{xd_max}); |
|
516
|
|
|
|
|
|
|
$me->{yd_min} = $min if !defined($me->{yd_min}) || $min < $me->{yd_min}; |
|
517
|
|
|
|
|
|
|
$me->{yd_max} = $max if !defined($me->{yd_max}) || $max > $me->{yd_max}; |
|
518
|
|
|
|
|
|
|
|
|
519
|
|
|
|
|
|
|
} |
|
520
|
|
|
|
|
|
|
|
|
521
|
|
|
|
|
|
|
# I hear beyond the range of sound, |
|
522
|
|
|
|
|
|
|
# I see beyond the range of sight, |
|
523
|
|
|
|
|
|
|
# New earths and skies and seas around, |
|
524
|
|
|
|
|
|
|
# And in my day the sun doth pale his light. |
|
525
|
|
|
|
|
|
|
# -- Thoreau, Inspiration |
|
526
|
|
|
|
|
|
|
sub set_y_range { |
|
527
|
|
|
|
|
|
|
my $me = shift; |
|
528
|
|
|
|
|
|
|
my $l = shift; |
|
529
|
|
|
|
|
|
|
my $h = shift; |
|
530
|
|
|
|
|
|
|
|
|
531
|
|
|
|
|
|
|
$me->{yd_min} = $l if defined($l) && $l ne ''; |
|
532
|
|
|
|
|
|
|
$me->{yd_max} = $h if defined($h) && $h ne ''; |
|
533
|
|
|
|
|
|
|
$me->adjust(); |
|
534
|
|
|
|
|
|
|
} |
|
535
|
|
|
|
|
|
|
|
|
536
|
|
|
|
|
|
|
sub set_x_range { |
|
537
|
|
|
|
|
|
|
my $me = shift; |
|
538
|
|
|
|
|
|
|
my $l = shift; |
|
539
|
|
|
|
|
|
|
my $h = shift; |
|
540
|
|
|
|
|
|
|
|
|
541
|
|
|
|
|
|
|
$me->{xd_min} = $l if defined($l) && $l ne ''; |
|
542
|
|
|
|
|
|
|
$me->{xd_max} = $h if defined($h) && $h ne ''; |
|
543
|
|
|
|
|
|
|
$me->adjust(); |
|
544
|
|
|
|
|
|
|
} |
|
545
|
|
|
|
|
|
|
|
|
546
|
|
|
|
|
|
|
sub img_color { |
|
547
|
|
|
|
|
|
|
my $me = shift; |
|
548
|
|
|
|
|
|
|
my $color = shift; |
|
549
|
|
|
|
|
|
|
|
|
550
|
|
|
|
|
|
|
$color =~ s/^#//; |
|
551
|
|
|
|
|
|
|
$color =~ s/\s//g; |
|
552
|
|
|
|
|
|
|
|
|
553
|
|
|
|
|
|
|
return $me->{color}{$color} if $me->{color}{$color}; |
|
554
|
|
|
|
|
|
|
my($r,$g,$b) = map {hex} unpack('a2 a2 a2', $color); |
|
555
|
|
|
|
|
|
|
my $i = $me->{img}->colorAllocate( $r, $g, $b ); |
|
556
|
|
|
|
|
|
|
$me->{color}{$color} = $i; |
|
557
|
|
|
|
|
|
|
|
|
558
|
|
|
|
|
|
|
return $i; |
|
559
|
|
|
|
|
|
|
} |
|
560
|
|
|
|
|
|
|
|
|
561
|
|
|
|
|
|
|
# choose proper color for plot |
|
562
|
|
|
|
|
|
|
sub color { |
|
563
|
|
|
|
|
|
|
my $me = shift; |
|
564
|
|
|
|
|
|
|
my $data = shift; |
|
565
|
|
|
|
|
|
|
my $opts = shift; |
|
566
|
|
|
|
|
|
|
|
|
567
|
|
|
|
|
|
|
# What is your favorite color? |
|
568
|
|
|
|
|
|
|
# Blue. No yel-- Auuuuuuuugh! |
|
569
|
|
|
|
|
|
|
# -- Monty Python, Holy Grail |
|
570
|
|
|
|
|
|
|
my $c = $data->{color} || $opts->{color}; |
|
571
|
|
|
|
|
|
|
if( $c ){ |
|
572
|
|
|
|
|
|
|
return $me->img_color( $c ); |
|
573
|
|
|
|
|
|
|
} |
|
574
|
|
|
|
|
|
|
|
|
575
|
|
|
|
|
|
|
return $me->{color}{green}; |
|
576
|
|
|
|
|
|
|
} |
|
577
|
|
|
|
|
|
|
|
|
578
|
|
|
|
|
|
|
# Titles are marks of honest men, and wise; |
|
579
|
|
|
|
|
|
|
# The fool or knave that wears a title lies. |
|
580
|
|
|
|
|
|
|
# -- Edward Young, Love of Fame |
|
581
|
|
|
|
|
|
|
sub title { |
|
582
|
|
|
|
|
|
|
my $me = shift; |
|
583
|
|
|
|
|
|
|
my( $loc ); |
|
584
|
|
|
|
|
|
|
|
|
585
|
|
|
|
|
|
|
return unless $me->{title}; |
|
586
|
|
|
|
|
|
|
$me->{margin_top} += 16; |
|
587
|
|
|
|
|
|
|
$me->adjust(); |
|
588
|
|
|
|
|
|
|
# center title |
|
589
|
|
|
|
|
|
|
$loc = ($me->{width} - length($me->{title}) * 7) / 2; |
|
590
|
|
|
|
|
|
|
$me->{img}->string(gdMediumBoldFont, $loc, 2, $me->{title}, $me->{color}{black}); |
|
591
|
|
|
|
|
|
|
} |
|
592
|
|
|
|
|
|
|
|
|
593
|
|
|
|
|
|
|
# when I waked, I found This label on my bosom |
|
594
|
|
|
|
|
|
|
# -- Shakespeare, Cymbeline |
|
595
|
|
|
|
|
|
|
sub xlabel { |
|
596
|
|
|
|
|
|
|
my $me = shift; |
|
597
|
|
|
|
|
|
|
my( $loc, $y ); |
|
598
|
|
|
|
|
|
|
|
|
599
|
|
|
|
|
|
|
return unless $me->{x_label}; |
|
600
|
|
|
|
|
|
|
$me->{margin_bottom} += 16; |
|
601
|
|
|
|
|
|
|
$me->adjust(); |
|
602
|
|
|
|
|
|
|
$loc = ($me->{width} - length($me->{x_label}) * 6) / 2; |
|
603
|
|
|
|
|
|
|
$y = $me->{height} - $me->{margin_bottom} + 8; |
|
604
|
|
|
|
|
|
|
$me->{img}->string(gdSmallFont, $loc, $y, $me->{x_label}, $me->{color}{black}); |
|
605
|
|
|
|
|
|
|
} |
|
606
|
|
|
|
|
|
|
|
|
607
|
|
|
|
|
|
|
sub ylabel { |
|
608
|
|
|
|
|
|
|
my $me = shift; |
|
609
|
|
|
|
|
|
|
my( $loc ); |
|
610
|
|
|
|
|
|
|
|
|
611
|
|
|
|
|
|
|
return unless $me->{y_label}; |
|
612
|
|
|
|
|
|
|
$me->{margin_left} += 12; |
|
613
|
|
|
|
|
|
|
$me->adjust(); |
|
614
|
|
|
|
|
|
|
my $m = ($me->{height} - $me->{margin_top} - $me->{margin_bottom}) / 2 + $me->{margin_top}; |
|
615
|
|
|
|
|
|
|
$loc = $m + length($me->{y_label}) * 6 / 2; |
|
616
|
|
|
|
|
|
|
$me->{img}->stringUp(gdSmallFont, 2, $loc, $me->{y_label}, $me->{color}{black}); |
|
617
|
|
|
|
|
|
|
# small => 12,6; tiny => 10,5 |
|
618
|
|
|
|
|
|
|
} |
|
619
|
|
|
|
|
|
|
|
|
620
|
|
|
|
|
|
|
# It must be a very pretty dance |
|
621
|
|
|
|
|
|
|
# -- Alice in Wonderland |
|
622
|
|
|
|
|
|
|
# make tic numbers pretty |
|
623
|
|
|
|
|
|
|
sub pretty { |
|
624
|
|
|
|
|
|
|
my $me = shift; |
|
625
|
|
|
|
|
|
|
my $y = shift; |
|
626
|
|
|
|
|
|
|
my $st = shift; |
|
627
|
|
|
|
|
|
|
my( $ay, $sc, $b, $prec ); |
|
628
|
|
|
|
|
|
|
|
|
629
|
|
|
|
|
|
|
return $me->{fmt_value}->($y) if $me->{fmt_value}; |
|
630
|
|
|
|
|
|
|
$sc = ''; |
|
631
|
|
|
|
|
|
|
$ay = abs($y); |
|
632
|
|
|
|
|
|
|
$b = $me->{binary} ? 1024 : 1000; |
|
633
|
|
|
|
|
|
|
|
|
634
|
|
|
|
|
|
|
if( $ay < 1 ){ |
|
635
|
|
|
|
|
|
|
if( $ay < 1/$b**3 ){ |
|
636
|
|
|
|
|
|
|
return "0"; |
|
637
|
|
|
|
|
|
|
} |
|
638
|
|
|
|
|
|
|
elsif( $ay < 1/$b**2 ){ |
|
639
|
|
|
|
|
|
|
$y *= $b ** 3; $st *= $b ** 3; |
|
640
|
|
|
|
|
|
|
$sc = 'n'; |
|
641
|
|
|
|
|
|
|
} |
|
642
|
|
|
|
|
|
|
elsif( $ay < 1/$b ){ |
|
643
|
|
|
|
|
|
|
$y *= $b**2; $st *= $b**2; |
|
644
|
|
|
|
|
|
|
$sc = 'u'; |
|
645
|
|
|
|
|
|
|
} |
|
646
|
|
|
|
|
|
|
elsif( $ay < 100/$b ){ # QQQ |
|
647
|
|
|
|
|
|
|
$y *= $b; $st *= $b; |
|
648
|
|
|
|
|
|
|
$sc = 'm'; |
|
649
|
|
|
|
|
|
|
} |
|
650
|
|
|
|
|
|
|
}else{ |
|
651
|
|
|
|
|
|
|
if( $ay >= $b**4 ){ |
|
652
|
|
|
|
|
|
|
$y /= $b**4; $st /= $b**4; |
|
653
|
|
|
|
|
|
|
$sc = 'T'; |
|
654
|
|
|
|
|
|
|
} |
|
655
|
|
|
|
|
|
|
elsif( $ay >= $b**3 ){ |
|
656
|
|
|
|
|
|
|
$y /= $b**3; $st /= $b**3; |
|
657
|
|
|
|
|
|
|
$sc = 'G'; |
|
658
|
|
|
|
|
|
|
} |
|
659
|
|
|
|
|
|
|
elsif( $ay >= $b**2 ){ |
|
660
|
|
|
|
|
|
|
$y /= $b**2; $st /= $b**2; |
|
661
|
|
|
|
|
|
|
$sc = 'M'; |
|
662
|
|
|
|
|
|
|
} |
|
663
|
|
|
|
|
|
|
elsif( $ay >= $b ){ |
|
664
|
|
|
|
|
|
|
$y /= $b; $st /= $b; |
|
665
|
|
|
|
|
|
|
$sc = 'k'; |
|
666
|
|
|
|
|
|
|
} |
|
667
|
|
|
|
|
|
|
} |
|
668
|
|
|
|
|
|
|
$sc .= 'i' if $sc && $me->{binary}; # as per IEC 60027-2 |
|
669
|
|
|
|
|
|
|
if( $st > 1 ){ |
|
670
|
|
|
|
|
|
|
$prec = 0; |
|
671
|
|
|
|
|
|
|
}else{ |
|
672
|
|
|
|
|
|
|
$prec = abs(floor(log($st)/log(10))); |
|
673
|
|
|
|
|
|
|
} |
|
674
|
|
|
|
|
|
|
|
|
675
|
|
|
|
|
|
|
sprintf "%.${prec}f$sc", $y; |
|
676
|
|
|
|
|
|
|
} |
|
677
|
|
|
|
|
|
|
|
|
678
|
|
|
|
|
|
|
sub ytics { |
|
679
|
|
|
|
|
|
|
my $me = shift; |
|
680
|
|
|
|
|
|
|
my( $min, $max, $tp, $st, $is, $low, $maxw, @tics ); |
|
681
|
|
|
|
|
|
|
|
|
682
|
|
|
|
|
|
|
$min = $me->{yd_min}; |
|
683
|
|
|
|
|
|
|
$max = $me->{yd_max}; |
|
684
|
|
|
|
|
|
|
$maxw = 0; |
|
685
|
|
|
|
|
|
|
|
|
686
|
|
|
|
|
|
|
if( $min == $max ){ |
|
687
|
|
|
|
|
|
|
# not a very interesting graph... |
|
688
|
|
|
|
|
|
|
my $lb = $me->pretty($min, 1); # QQQ |
|
689
|
|
|
|
|
|
|
my $w = length($lb) * 5 + 6; |
|
690
|
|
|
|
|
|
|
push @tics, [$me->ydatapt($min), $lb, $w]; |
|
691
|
|
|
|
|
|
|
$maxw = $w; |
|
692
|
|
|
|
|
|
|
}else{ |
|
693
|
|
|
|
|
|
|
$tp = ($max - $min) / $me->{n_y_tics}; # approx spacing of tics |
|
694
|
|
|
|
|
|
|
if( $me->{binary} ){ |
|
695
|
|
|
|
|
|
|
$is = 2 ** floor( log($tp)/log(2) ); |
|
696
|
|
|
|
|
|
|
}else{ |
|
697
|
|
|
|
|
|
|
$is = 10 ** floor( log($tp)/log(10) ); |
|
698
|
|
|
|
|
|
|
} |
|
699
|
|
|
|
|
|
|
$st = floor( $tp / $is ) * $is; # -> 4 - 8, ceil -> 2 - 4 |
|
700
|
|
|
|
|
|
|
# mathematically, tp/is cannot be less than 1 |
|
701
|
|
|
|
|
|
|
# but due to floating-point lossage, in rare cases, it might |
|
702
|
|
|
|
|
|
|
$st ||= $is; |
|
703
|
|
|
|
|
|
|
$low = int( $min / $st ) * $st; |
|
704
|
|
|
|
|
|
|
for my $i ( 0 .. (2 * $me->{n_y_tics} + 2) ){ |
|
705
|
|
|
|
|
|
|
my $y = $low + $i * $st; |
|
706
|
|
|
|
|
|
|
next if $y < $min; |
|
707
|
|
|
|
|
|
|
last if $y > $max; |
|
708
|
|
|
|
|
|
|
my $yy = $me->ydatapt($y); |
|
709
|
|
|
|
|
|
|
my $label = $me->pretty($y, $st); |
|
710
|
|
|
|
|
|
|
my $w = 5 * length($label) + 6; |
|
711
|
|
|
|
|
|
|
$maxw = $w if $w > $maxw; |
|
712
|
|
|
|
|
|
|
|
|
713
|
|
|
|
|
|
|
push @tics, [$yy, $label, $w]; |
|
714
|
|
|
|
|
|
|
} |
|
715
|
|
|
|
|
|
|
} |
|
716
|
|
|
|
|
|
|
|
|
717
|
|
|
|
|
|
|
if( $me->{draw_tic_labels} ){ |
|
718
|
|
|
|
|
|
|
# move margin |
|
719
|
|
|
|
|
|
|
$me->{margin_left} += $maxw; |
|
720
|
|
|
|
|
|
|
$me->adjust(); |
|
721
|
|
|
|
|
|
|
} |
|
722
|
|
|
|
|
|
|
|
|
723
|
|
|
|
|
|
|
$me->{grid}{y} = \@tics; |
|
724
|
|
|
|
|
|
|
} |
|
725
|
|
|
|
|
|
|
|
|
726
|
|
|
|
|
|
|
sub drawgrid { |
|
727
|
|
|
|
|
|
|
my $me = shift; |
|
728
|
|
|
|
|
|
|
my $im = $me->{img}; |
|
729
|
|
|
|
|
|
|
|
|
730
|
|
|
|
|
|
|
foreach my $tic (@{$me->{grid}{y}}){ |
|
731
|
|
|
|
|
|
|
# ytics + horiz lines |
|
732
|
|
|
|
|
|
|
my $yy = $tic->[0]; |
|
733
|
|
|
|
|
|
|
$im->line($me->xpt(-1), $yy, $me->xpt(-4), $yy, |
|
734
|
|
|
|
|
|
|
$me->{color}{black}); |
|
735
|
|
|
|
|
|
|
$im->line($me->xpt(0), $yy, $me->{width} - $me->{margin_right}, $yy, |
|
736
|
|
|
|
|
|
|
gdStyled) if $me->{draw_grid}; |
|
737
|
|
|
|
|
|
|
|
|
738
|
|
|
|
|
|
|
if( $me->{draw_tic_labels} ){ |
|
739
|
|
|
|
|
|
|
my $label = $tic->[1]; |
|
740
|
|
|
|
|
|
|
my $w = $tic->[2]; |
|
741
|
|
|
|
|
|
|
$im->string(gdTinyFont, $me->xpt(-$w), $yy-4, |
|
742
|
|
|
|
|
|
|
$label, |
|
743
|
|
|
|
|
|
|
$me->{color}{black}); |
|
744
|
|
|
|
|
|
|
} |
|
745
|
|
|
|
|
|
|
} |
|
746
|
|
|
|
|
|
|
|
|
747
|
|
|
|
|
|
|
foreach my $tic (@{$me->{grid}{x}}){ |
|
748
|
|
|
|
|
|
|
# xtics + vert lines |
|
749
|
|
|
|
|
|
|
my( $t, $ll, $label ) = @$tic; |
|
750
|
|
|
|
|
|
|
|
|
751
|
|
|
|
|
|
|
# supress solid line if adjacent to axis |
|
752
|
|
|
|
|
|
|
if( $ll && ($t != $me->{xd_min}) ){ |
|
753
|
|
|
|
|
|
|
# solid line, red label |
|
754
|
|
|
|
|
|
|
$im->line($me->xdatapt($t), $me->{margin_top}, |
|
755
|
|
|
|
|
|
|
$me->xdatapt($t), $me->ypt(-4), |
|
756
|
|
|
|
|
|
|
$me->{color}{black} ); |
|
757
|
|
|
|
|
|
|
}else{ |
|
758
|
|
|
|
|
|
|
# tic and grid |
|
759
|
|
|
|
|
|
|
$im->line($me->xdatapt($t), $me->ypt(-1), |
|
760
|
|
|
|
|
|
|
$me->xdatapt($t), $me->ypt(-4), |
|
761
|
|
|
|
|
|
|
$me->{color}{black} ); |
|
762
|
|
|
|
|
|
|
$im->line($me->xdatapt($t), $me->{margin_top}, |
|
763
|
|
|
|
|
|
|
$me->xdatapt($t), $me->ypt(0), |
|
764
|
|
|
|
|
|
|
gdStyled ) if $me->{draw_grid}; |
|
765
|
|
|
|
|
|
|
} |
|
766
|
|
|
|
|
|
|
|
|
767
|
|
|
|
|
|
|
if( $me->{draw_tic_labels} ){ |
|
768
|
|
|
|
|
|
|
my $a = length($label) * 6 / 4; # it looks better not quite centered |
|
769
|
|
|
|
|
|
|
if( length($label)*6 * 3/4 + $me->xdatapt($t) > $me->{width} ){ |
|
770
|
|
|
|
|
|
|
# too close to edge, shift |
|
771
|
|
|
|
|
|
|
$a = $me->xdatapt($t) - $me->{width} + length($label) * 6 + 2; |
|
772
|
|
|
|
|
|
|
} |
|
773
|
|
|
|
|
|
|
|
|
774
|
|
|
|
|
|
|
$im->string(gdSmallFont, $me->xdatapt($t)-$a, $me->ypt(-6), |
|
775
|
|
|
|
|
|
|
$label, $ll ? $me->{color}{red} : $me->{color}{black} ); |
|
776
|
|
|
|
|
|
|
} |
|
777
|
|
|
|
|
|
|
} |
|
778
|
|
|
|
|
|
|
} |
|
779
|
|
|
|
|
|
|
|
|
780
|
|
|
|
|
|
|
sub xtic_range_data { |
|
781
|
|
|
|
|
|
|
my $me = shift; # not used |
|
782
|
|
|
|
|
|
|
my $range = shift; |
|
783
|
|
|
|
|
|
|
|
|
784
|
|
|
|
|
|
|
my $range_hrs = $range / 3600; |
|
785
|
|
|
|
|
|
|
my $range_days = $range_hrs / 24; |
|
786
|
|
|
|
|
|
|
|
|
787
|
|
|
|
|
|
|
# return: step, labeltype, marktype, lti, tmod |
|
788
|
|
|
|
|
|
|
|
|
789
|
|
|
|
|
|
|
if( $range < 720 ){ |
|
790
|
|
|
|
|
|
|
(60, $LT_HM, $MT_HR, 1, 1); # tics: 1 min |
|
791
|
|
|
|
|
|
|
} |
|
792
|
|
|
|
|
|
|
elsif( $range < 1800 ){ |
|
793
|
|
|
|
|
|
|
(300, $LT_HM, $MT_HR, 1, 5); # tics: 5 min |
|
794
|
|
|
|
|
|
|
} |
|
795
|
|
|
|
|
|
|
elsif( $range_hrs < 2 ){ |
|
796
|
|
|
|
|
|
|
(600, $LT_HM, $MT_HR, 1, 10); # tics: 10 min |
|
797
|
|
|
|
|
|
|
} |
|
798
|
|
|
|
|
|
|
elsif( $range_hrs < 6 ){ |
|
799
|
|
|
|
|
|
|
(1800, $LT_HR, $MT_MN, 1, 30); # tics: 30 min |
|
800
|
|
|
|
|
|
|
} |
|
801
|
|
|
|
|
|
|
elsif( $range_hrs < 13 ){ |
|
802
|
|
|
|
|
|
|
(3600, $LT_HR, $MT_MN, 2, 1); # tics: 1 hr |
|
803
|
|
|
|
|
|
|
} |
|
804
|
|
|
|
|
|
|
elsif( $range_hrs < 25 ){ |
|
805
|
|
|
|
|
|
|
(3600, $LT_HR, $MT_MN, 2, 2); # tics: 2 hrs |
|
806
|
|
|
|
|
|
|
} |
|
807
|
|
|
|
|
|
|
elsif( $range_hrs < 50 ){ |
|
808
|
|
|
|
|
|
|
(3600, $LT_HR, $MT_MN, 2, 4); # tics: 4 hrs |
|
809
|
|
|
|
|
|
|
} |
|
810
|
|
|
|
|
|
|
elsif( $range_hrs < 75 ){ |
|
811
|
|
|
|
|
|
|
(3600, $LT_HR, $MT_MN, 2, 6); # tics: 6 hrs |
|
812
|
|
|
|
|
|
|
} |
|
813
|
|
|
|
|
|
|
|
|
814
|
|
|
|
|
|
|
# NB: days shorter or longer than 24 hours are corrected for below |
|
815
|
|
|
|
|
|
|
elsif( $range_days < 15 ){ |
|
816
|
|
|
|
|
|
|
(3600*24, $LT_DW, $MT_SU, 3, 1); # tics 1 day |
|
817
|
|
|
|
|
|
|
} |
|
818
|
|
|
|
|
|
|
elsif( $range_days < 22 ){ |
|
819
|
|
|
|
|
|
|
(3600*24, $LT_DM, $MT_M1, 3, 2); # tics: 2 days |
|
820
|
|
|
|
|
|
|
} |
|
821
|
|
|
|
|
|
|
elsif( $range_days < 80 ){ |
|
822
|
|
|
|
|
|
|
(3600*24, $LT_DM, $MT_M1, 3, 7); # tics: 7 days |
|
823
|
|
|
|
|
|
|
} |
|
824
|
|
|
|
|
|
|
elsif( $range_days < 168 ){ |
|
825
|
|
|
|
|
|
|
(3600*24, $LT_DM, $MT_Y1, 3, 14); # tics: 14 days |
|
826
|
|
|
|
|
|
|
} |
|
827
|
|
|
|
|
|
|
# NB: months shorter than 31 days are corrected for below |
|
828
|
|
|
|
|
|
|
elsif( $range_days < 370 ){ |
|
829
|
|
|
|
|
|
|
(3600*24*31, $LT_DM, $MT_Y1, 4, 1); # tics: 1 month |
|
830
|
|
|
|
|
|
|
} |
|
831
|
|
|
|
|
|
|
elsif( $range_days < 500 ){ |
|
832
|
|
|
|
|
|
|
(3600*24*31, $LT_DM, $MT_Y1, 4, 2); # tics: 2 month |
|
833
|
|
|
|
|
|
|
} |
|
834
|
|
|
|
|
|
|
elsif( $range_days < 1000 ){ |
|
835
|
|
|
|
|
|
|
(3600*24*31, $LT_DM, $MT_Y1, 4, 3); # tics: 3 month |
|
836
|
|
|
|
|
|
|
} |
|
837
|
|
|
|
|
|
|
elsif( $range_days < 2000 ){ |
|
838
|
|
|
|
|
|
|
(3600*24*31, $LT_DM, $MT_NO, 4, 6); # tics: 6 month |
|
839
|
|
|
|
|
|
|
} |
|
840
|
|
|
|
|
|
|
|
|
841
|
|
|
|
|
|
|
else{ |
|
842
|
|
|
|
|
|
|
# NB: years less than 366 days are corrected for below |
|
843
|
|
|
|
|
|
|
(3600*24*366, $LT_YR, $MT_NO, 4, 12); # tics: 1 yr |
|
844
|
|
|
|
|
|
|
} |
|
845
|
|
|
|
|
|
|
} |
|
846
|
|
|
|
|
|
|
|
|
847
|
|
|
|
|
|
|
sub xtic_align_initial { |
|
848
|
|
|
|
|
|
|
my $me = shift; |
|
849
|
|
|
|
|
|
|
my $step = shift; |
|
850
|
|
|
|
|
|
|
|
|
851
|
|
|
|
|
|
|
my $t = ($step < 3600) ? (int($me->{xd_min} / $step) * $step) |
|
852
|
|
|
|
|
|
|
: (int($me->{xd_min} / 3600) * 3600); |
|
853
|
|
|
|
|
|
|
|
|
854
|
|
|
|
|
|
|
if( $step >= 3600*24*365 ){ |
|
855
|
|
|
|
|
|
|
while(1){ |
|
856
|
|
|
|
|
|
|
# search for 1jan |
|
857
|
|
|
|
|
|
|
my @lt = $me->{tm_time}($t); |
|
858
|
|
|
|
|
|
|
last if $lt[4] == 0 && $lt[3] == 1 && $lt[2] == 0; |
|
859
|
|
|
|
|
|
|
# jump fwd: 1M, 1D, or 1H |
|
860
|
|
|
|
|
|
|
my $dt = ($lt[4] != 11) ? 24*30 : ($lt[3] < 30) ? 24 : 1; |
|
861
|
|
|
|
|
|
|
$t += $dt * 3600; |
|
862
|
|
|
|
|
|
|
} |
|
863
|
|
|
|
|
|
|
} |
|
864
|
|
|
|
|
|
|
elsif( $step >= 3600*24*31 ){ |
|
865
|
|
|
|
|
|
|
while(1){ |
|
866
|
|
|
|
|
|
|
# find 1st of mon |
|
867
|
|
|
|
|
|
|
my @lt = $me->{tm_time}($t); |
|
868
|
|
|
|
|
|
|
last if $lt[3] == 1 && $lt[2] == 0; |
|
869
|
|
|
|
|
|
|
my $dt = ($lt[3] < 28) ? 24 : 1; |
|
870
|
|
|
|
|
|
|
$t += $dt * 3600; |
|
871
|
|
|
|
|
|
|
} |
|
872
|
|
|
|
|
|
|
} |
|
873
|
|
|
|
|
|
|
elsif( $step >= 3600*24 ){ |
|
874
|
|
|
|
|
|
|
while(1){ |
|
875
|
|
|
|
|
|
|
# search for midnight |
|
876
|
|
|
|
|
|
|
my @lt = $me->{tm_time}($t); |
|
877
|
|
|
|
|
|
|
last unless $lt[2]; |
|
878
|
|
|
|
|
|
|
$t += 3600; |
|
879
|
|
|
|
|
|
|
} |
|
880
|
|
|
|
|
|
|
} |
|
881
|
|
|
|
|
|
|
|
|
882
|
|
|
|
|
|
|
$t; |
|
883
|
|
|
|
|
|
|
} |
|
884
|
|
|
|
|
|
|
|
|
885
|
|
|
|
|
|
|
sub xtics { |
|
886
|
|
|
|
|
|
|
my $me = shift; |
|
887
|
|
|
|
|
|
|
my @tics; |
|
888
|
|
|
|
|
|
|
|
|
889
|
|
|
|
|
|
|
# this is good for (roughly) 10 mins - 10 yrs |
|
890
|
|
|
|
|
|
|
return if $me->{xd_max} == $me->{xd_min}; |
|
891
|
|
|
|
|
|
|
|
|
892
|
|
|
|
|
|
|
my $range = $me->{xd_max} - $me->{xd_min}; |
|
893
|
|
|
|
|
|
|
my $range_hrs = $range / 3600; |
|
894
|
|
|
|
|
|
|
my $range_days = $range_hrs / 24; |
|
895
|
|
|
|
|
|
|
|
|
896
|
|
|
|
|
|
|
my ($step, $labtyp, $marktyp, $lti, $tmod) = $me->xtic_range_data( $range ); |
|
897
|
|
|
|
|
|
|
my $t = $me->xtic_align_initial( $step ); |
|
898
|
|
|
|
|
|
|
|
|
899
|
|
|
|
|
|
|
# print "days: $range_days, lt: $labtyp, lti: $lti, tmod: $tmod, st: $step\n"; |
|
900
|
|
|
|
|
|
|
# print STDERR "t: $t ", scalar(localtime $t), "\n"; |
|
901
|
|
|
|
|
|
|
|
|
902
|
|
|
|
|
|
|
for( ; $t<$me->{xd_max}; $t+=$step ){ |
|
903
|
|
|
|
|
|
|
my $redmark = 0; |
|
904
|
|
|
|
|
|
|
next if $t < $me->{xd_min}; |
|
905
|
|
|
|
|
|
|
my @lt = $me->{tm_time}($t); |
|
906
|
|
|
|
|
|
|
my @rlt = @lt; |
|
907
|
|
|
|
|
|
|
# months go from 0. days from 1. absurd! |
|
908
|
|
|
|
|
|
|
$lt[3]--; |
|
909
|
|
|
|
|
|
|
# mathematically, 28 is divisible by 7. but that just looks silly. |
|
910
|
|
|
|
|
|
|
$lt[3] = 22 if $lt[3] > 22 && $lti==3 && $tmod >= 7; |
|
911
|
|
|
|
|
|
|
|
|
912
|
|
|
|
|
|
|
if( $step >= 3600*24 && $lt[2] ){ |
|
913
|
|
|
|
|
|
|
# handle daylight saving time changes - resync to midnight |
|
914
|
|
|
|
|
|
|
my $dt = ($lt[2] > 12 ? $lt[2] - 24 : $lt[2]) * 3600; |
|
915
|
|
|
|
|
|
|
$dt += $lt[1] * 60; |
|
916
|
|
|
|
|
|
|
$t -= $dt; |
|
917
|
|
|
|
|
|
|
redo; |
|
918
|
|
|
|
|
|
|
} |
|
919
|
|
|
|
|
|
|
if( $step >= 3600*24*31 && $lt[3] ){ |
|
920
|
|
|
|
|
|
|
# some months are not 31 days! |
|
921
|
|
|
|
|
|
|
# also corrects years that do not leap |
|
922
|
|
|
|
|
|
|
my $dt = $lt[3] * 3600*24; |
|
923
|
|
|
|
|
|
|
$t -= $dt; |
|
924
|
|
|
|
|
|
|
redo; |
|
925
|
|
|
|
|
|
|
} |
|
926
|
|
|
|
|
|
|
|
|
927
|
|
|
|
|
|
|
next if $lt[$lti] % $tmod; |
|
928
|
|
|
|
|
|
|
next if $lt[3] && $lti > 3; |
|
929
|
|
|
|
|
|
|
next if $lt[2] && $lti > 2; |
|
930
|
|
|
|
|
|
|
next if $lt[1] && $lti > 1; |
|
931
|
|
|
|
|
|
|
next if $lt[0] && $lti > 0; |
|
932
|
|
|
|
|
|
|
|
|
933
|
|
|
|
|
|
|
|
|
934
|
|
|
|
|
|
|
$redmark = 1 if $marktyp == $MT_HR && !$lt[1]; # on the hour |
|
935
|
|
|
|
|
|
|
$redmark = 1 if $marktyp == $MT_MN && !$lt[2] && !$lt[1]; # midnight |
|
936
|
|
|
|
|
|
|
$redmark = 1 if $marktyp == $MT_SU && !$lt[6]; # sunday |
|
937
|
|
|
|
|
|
|
$redmark = 1 if $marktyp == $MT_M1 && !$lt[3]; # 1st of month |
|
938
|
|
|
|
|
|
|
$redmark = 1 if $marktyp == $MT_Y1 && !$lt[3] && !$lt[4]; # 1 jan |
|
939
|
|
|
|
|
|
|
|
|
940
|
|
|
|
|
|
|
my $label; |
|
941
|
|
|
|
|
|
|
# NB: strftime obeys LC_TIME for localized day/month names |
|
942
|
|
|
|
|
|
|
# (if locales are supported in the OS and perl) |
|
943
|
|
|
|
|
|
|
if( $labtyp == $LT_HM ){ |
|
944
|
|
|
|
|
|
|
$label = sprintf "%d:%0.2d", $rlt[2], $rlt[1]; # time |
|
945
|
|
|
|
|
|
|
} |
|
946
|
|
|
|
|
|
|
if( $labtyp == $LT_HR ){ |
|
947
|
|
|
|
|
|
|
if( $redmark ){ |
|
948
|
|
|
|
|
|
|
$label = strftime("%d/%b", @rlt); # date DD/Mon |
|
949
|
|
|
|
|
|
|
}else{ |
|
950
|
|
|
|
|
|
|
$label = sprintf "%d:%0.2d", $rlt[2], $rlt[1]; # time |
|
951
|
|
|
|
|
|
|
} |
|
952
|
|
|
|
|
|
|
} |
|
953
|
|
|
|
|
|
|
if( $labtyp == $LT_DW ){ |
|
954
|
|
|
|
|
|
|
if( $redmark ){ |
|
955
|
|
|
|
|
|
|
$label = strftime("%d/%b", @rlt); # date DD/Mon |
|
956
|
|
|
|
|
|
|
}else{ |
|
957
|
|
|
|
|
|
|
$label = strftime("%a", @rlt); # day of week |
|
958
|
|
|
|
|
|
|
} |
|
959
|
|
|
|
|
|
|
} |
|
960
|
|
|
|
|
|
|
if( $labtyp == $LT_DM ){ |
|
961
|
|
|
|
|
|
|
if( !$lt[3] && !$lt[4] ){ |
|
962
|
|
|
|
|
|
|
$label = $rlt[5] + 1900; # year |
|
963
|
|
|
|
|
|
|
}else{ |
|
964
|
|
|
|
|
|
|
$label = strftime("%d/%b", @rlt); # date DD/Mon |
|
965
|
|
|
|
|
|
|
} |
|
966
|
|
|
|
|
|
|
} |
|
967
|
|
|
|
|
|
|
if( $labtyp == $LT_YR ){ |
|
968
|
|
|
|
|
|
|
$label = $rlt[5] + 1900; # year |
|
969
|
|
|
|
|
|
|
} |
|
970
|
|
|
|
|
|
|
push @tics, [$t, $redmark, $label]; |
|
971
|
|
|
|
|
|
|
} |
|
972
|
|
|
|
|
|
|
$me->{grid}{x} = \@tics; |
|
973
|
|
|
|
|
|
|
|
|
974
|
|
|
|
|
|
|
} |
|
975
|
|
|
|
|
|
|
|
|
976
|
|
|
|
|
|
|
# it shall be inventoried, and every particle and utensil |
|
977
|
|
|
|
|
|
|
# labelled to my will: as, item, two lips, |
|
978
|
|
|
|
|
|
|
# indifferent red; item, two grey eyes, with lids to |
|
979
|
|
|
|
|
|
|
# them; item, one neck, one chin, and so forth. Were |
|
980
|
|
|
|
|
|
|
# you sent hither to praise me? |
|
981
|
|
|
|
|
|
|
# -- Shakespeare, Twelfth Night |
|
982
|
|
|
|
|
|
|
sub clabels { |
|
983
|
|
|
|
|
|
|
my $me = shift; |
|
984
|
|
|
|
|
|
|
|
|
985
|
|
|
|
|
|
|
return unless $me->{draw_data_labels}; |
|
986
|
|
|
|
|
|
|
|
|
987
|
|
|
|
|
|
|
my $rs = 0; |
|
988
|
|
|
|
|
|
|
my $rm = 0; |
|
989
|
|
|
|
|
|
|
if( $me->{data_label_style} eq 'box' ){ |
|
990
|
|
|
|
|
|
|
$rs = 6; |
|
991
|
|
|
|
|
|
|
$rm = 3; |
|
992
|
|
|
|
|
|
|
} |
|
993
|
|
|
|
|
|
|
|
|
994
|
|
|
|
|
|
|
my( $tw, $r, @cl, @cx ); |
|
995
|
|
|
|
|
|
|
$tw = $r = 0; |
|
996
|
|
|
|
|
|
|
# round the neck of the bottle was a paper label, with the |
|
997
|
|
|
|
|
|
|
# words 'DRINK ME' beautifully printed on it in large letters |
|
998
|
|
|
|
|
|
|
# -- Alice in Wonderland |
|
999
|
|
|
|
|
|
|
foreach my $d (@{$me->{data}}){ |
|
1000
|
|
|
|
|
|
|
my $l = $d->{opts}{label}; |
|
1001
|
|
|
|
|
|
|
my $c = $d->{opts}{color}; |
|
1002
|
|
|
|
|
|
|
next unless $l; |
|
1003
|
|
|
|
|
|
|
my $w = length($l) * 5 + 6; |
|
1004
|
|
|
|
|
|
|
$w += $rm + $rs; |
|
1005
|
|
|
|
|
|
|
|
|
1006
|
|
|
|
|
|
|
if( $tw + $w > $me->{width} - $me->{margin_left} - $me->{margin_right} ){ |
|
1007
|
|
|
|
|
|
|
$r ++; |
|
1008
|
|
|
|
|
|
|
$tw = 0; |
|
1009
|
|
|
|
|
|
|
} |
|
1010
|
|
|
|
|
|
|
push @cx, [$l, $tw, $r, $c]; |
|
1011
|
|
|
|
|
|
|
$tw += $w; |
|
1012
|
|
|
|
|
|
|
} |
|
1013
|
|
|
|
|
|
|
|
|
1014
|
|
|
|
|
|
|
my $i = 0; |
|
1015
|
|
|
|
|
|
|
foreach my $x (@cx){ |
|
1016
|
|
|
|
|
|
|
my $xx = $x->[1] + $me->{margin_left}; |
|
1017
|
|
|
|
|
|
|
my $y = $me->{height} - ($r - $x->[2] + 1) * 10; |
|
1018
|
|
|
|
|
|
|
my $c = $x->[3]; |
|
1019
|
|
|
|
|
|
|
if( $rs ){ |
|
1020
|
|
|
|
|
|
|
$me->{img}->filledRectangle($xx, $y+1, $xx+$rs, $y+$rs+1, $me->color({color => $c})); |
|
1021
|
|
|
|
|
|
|
$me->{img}->rectangle($xx, $y+1, $xx+$rs, $y+$rs+1, $me->{color}{black}); |
|
1022
|
|
|
|
|
|
|
$me->{img}->string(gdTinyFont, $xx+$rs+$rm, $y, $x->[0], $me->{color}{black}); |
|
1023
|
|
|
|
|
|
|
}else{ |
|
1024
|
|
|
|
|
|
|
$me->{img}->string(gdTinyFont, $xx, $y, $x->[0], $me->color({color => $c})); |
|
1025
|
|
|
|
|
|
|
} |
|
1026
|
|
|
|
|
|
|
} |
|
1027
|
|
|
|
|
|
|
if( @cx ){ |
|
1028
|
|
|
|
|
|
|
$me->{margin_bottom} += ($r + 1) * 10; |
|
1029
|
|
|
|
|
|
|
$me->adjust(); |
|
1030
|
|
|
|
|
|
|
} |
|
1031
|
|
|
|
|
|
|
} |
|
1032
|
|
|
|
|
|
|
|
|
1033
|
|
|
|
|
|
|
sub plot_data { |
|
1034
|
|
|
|
|
|
|
my $me = shift; |
|
1035
|
|
|
|
|
|
|
my $data = shift; |
|
1036
|
|
|
|
|
|
|
my $opts = shift; |
|
1037
|
|
|
|
|
|
|
my $shadow = shift; |
|
1038
|
|
|
|
|
|
|
|
|
1039
|
|
|
|
|
|
|
return unless $data && @$data; |
|
1040
|
|
|
|
|
|
|
|
|
1041
|
|
|
|
|
|
|
# 'What did they draw?' said Alice, quite forgetting her promise. |
|
1042
|
|
|
|
|
|
|
# -- Alice in Wonderland |
|
1043
|
|
|
|
|
|
|
if( $opts->{style} eq 'line' ){ |
|
1044
|
|
|
|
|
|
|
# 'You can draw water out of a water-well,' said the Hatter |
|
1045
|
|
|
|
|
|
|
# -- Alice in Wonderland |
|
1046
|
|
|
|
|
|
|
$me->draw_line( $data, $opts, $shadow ); |
|
1047
|
|
|
|
|
|
|
} |
|
1048
|
|
|
|
|
|
|
elsif( $opts->{style} eq 'filled' ){ |
|
1049
|
|
|
|
|
|
|
# I should think you could draw treacle out of a treacle-well |
|
1050
|
|
|
|
|
|
|
# -- Alice in Wonderland |
|
1051
|
|
|
|
|
|
|
$me->draw_filled( $data, $opts, $shadow ); |
|
1052
|
|
|
|
|
|
|
} |
|
1053
|
|
|
|
|
|
|
elsif( $opts->{style} eq 'range' ){ |
|
1054
|
|
|
|
|
|
|
# did you ever see such a thing as a drawing of a muchness? |
|
1055
|
|
|
|
|
|
|
# -- Alice in Wonderland |
|
1056
|
|
|
|
|
|
|
$me->draw_range( $data, $opts, $shadow ); |
|
1057
|
|
|
|
|
|
|
}elsif( $opts->{style} eq 'points' ){ |
|
1058
|
|
|
|
|
|
|
# and they drew all manner of things--everything that begins with an M--' |
|
1059
|
|
|
|
|
|
|
# -- Alice in Wonderland |
|
1060
|
|
|
|
|
|
|
$me->draw_points( $data, $opts, $shadow ); |
|
1061
|
|
|
|
|
|
|
}elsif( $opts->{style} eq 'box' ){ |
|
1062
|
|
|
|
|
|
|
$me->draw_boxes( $data, $opts, $shadow ); |
|
1063
|
|
|
|
|
|
|
}else{ |
|
1064
|
|
|
|
|
|
|
croak "unknown graph style--cannot draw"; |
|
1065
|
|
|
|
|
|
|
} |
|
1066
|
|
|
|
|
|
|
} |
|
1067
|
|
|
|
|
|
|
|
|
1068
|
|
|
|
|
|
|
# A flattering painter, who made it his care |
|
1069
|
|
|
|
|
|
|
# To draw men as they ought to be, not as they are. |
|
1070
|
|
|
|
|
|
|
# -- Oliver Goldsmith, Retaliation |
|
1071
|
|
|
|
|
|
|
|
|
1072
|
|
|
|
|
|
|
sub draw_filled { |
|
1073
|
|
|
|
|
|
|
my $me = shift; |
|
1074
|
|
|
|
|
|
|
my $data = shift; |
|
1075
|
|
|
|
|
|
|
my $opts = shift; |
|
1076
|
|
|
|
|
|
|
my $shadow = shift; |
|
1077
|
|
|
|
|
|
|
|
|
1078
|
|
|
|
|
|
|
my $im = $me->{img}; |
|
1079
|
|
|
|
|
|
|
my $limit = $me->{limit_factor} * ($me->{xd_max} - $me->{xd_min}) / @$data; |
|
1080
|
|
|
|
|
|
|
my $skipundef = $opts->{skip_undefined} || $me->{skip_undefined}; |
|
1081
|
|
|
|
|
|
|
my $thick = $opts->{thickness} || $me->{thickness}; |
|
1082
|
|
|
|
|
|
|
my $smooth = $opts->{smooth} || $me->{smooth}; |
|
1083
|
|
|
|
|
|
|
my $shcolor = $shadow ? $me->img_color($shadow->{color} || $me->{shadow_color} ) : undef; |
|
1084
|
|
|
|
|
|
|
my($px, $py, $pxdpt, $pydpt, $pdydx); |
|
1085
|
|
|
|
|
|
|
my $ypt0 = $me->ypt(0); |
|
1086
|
|
|
|
|
|
|
|
|
1087
|
|
|
|
|
|
|
$thick += $shadow->{dw} if $shadow; |
|
1088
|
|
|
|
|
|
|
$me->set_thickness( $thick ) if $thick; |
|
1089
|
|
|
|
|
|
|
|
|
1090
|
|
|
|
|
|
|
foreach my $s ( @$data ){ |
|
1091
|
|
|
|
|
|
|
my $x = $s->{time}; |
|
1092
|
|
|
|
|
|
|
my $y = $s->{value}; |
|
1093
|
|
|
|
|
|
|
|
|
1094
|
|
|
|
|
|
|
next if $x < $me->{xd_min} || $x > $me->{xd_max}; |
|
1095
|
|
|
|
|
|
|
|
|
1096
|
|
|
|
|
|
|
my $xdpt = $me->xdatapt($x); |
|
1097
|
|
|
|
|
|
|
my $ydpt = $me->ydatapt($y); |
|
1098
|
|
|
|
|
|
|
my $dydx; |
|
1099
|
|
|
|
|
|
|
|
|
1100
|
|
|
|
|
|
|
if( $shadow ){ |
|
1101
|
|
|
|
|
|
|
$xdpt += $shadow->{dx}; |
|
1102
|
|
|
|
|
|
|
$ydpt += $shadow->{dy}; |
|
1103
|
|
|
|
|
|
|
} |
|
1104
|
|
|
|
|
|
|
|
|
1105
|
|
|
|
|
|
|
if( defined($y) || !$skipundef ){ |
|
1106
|
|
|
|
|
|
|
my $color = $shadow ? $shcolor : $me->color($s, $opts); |
|
1107
|
|
|
|
|
|
|
|
|
1108
|
|
|
|
|
|
|
if( defined($px) && ($xdpt - $pxdpt > 1) && (!$limit || $x - $px <= $limit) ){ |
|
1109
|
|
|
|
|
|
|
if( $smooth ){ |
|
1110
|
|
|
|
|
|
|
next unless defined $s->{dydx}; |
|
1111
|
|
|
|
|
|
|
$dydx = - $s->{dydx} * $me->{yd_scale} / $me->{xd_scale}; |
|
1112
|
|
|
|
|
|
|
$me->curve($pxdpt, $pydpt, $pdydx, |
|
1113
|
|
|
|
|
|
|
$xdpt, $ydpt, $dydx, |
|
1114
|
|
|
|
|
|
|
$smooth, \&curve_filled, [$color, $ypt0]); |
|
1115
|
|
|
|
|
|
|
}else{ |
|
1116
|
|
|
|
|
|
|
my $poly = GD::Polygon->new; |
|
1117
|
|
|
|
|
|
|
$poly->addPt($pxdpt, $ypt0); |
|
1118
|
|
|
|
|
|
|
$poly->addPt($pxdpt, $pydpt); |
|
1119
|
|
|
|
|
|
|
$poly->addPt($xdpt, $ydpt); |
|
1120
|
|
|
|
|
|
|
$poly->addPt($xdpt, $ypt0); |
|
1121
|
|
|
|
|
|
|
$im->filledPolygon($poly, $color); |
|
1122
|
|
|
|
|
|
|
} |
|
1123
|
|
|
|
|
|
|
}else{ |
|
1124
|
|
|
|
|
|
|
$im->line( $xdpt, $ypt0, |
|
1125
|
|
|
|
|
|
|
$xdpt, $ydpt, |
|
1126
|
|
|
|
|
|
|
$color); |
|
1127
|
|
|
|
|
|
|
} |
|
1128
|
|
|
|
|
|
|
$px = $x; $pxdpt = $xdpt; |
|
1129
|
|
|
|
|
|
|
$py = $y; $pydpt = $ydpt; |
|
1130
|
|
|
|
|
|
|
$pdydx = $dydx; |
|
1131
|
|
|
|
|
|
|
}else{ |
|
1132
|
|
|
|
|
|
|
$px = undef; |
|
1133
|
|
|
|
|
|
|
} |
|
1134
|
|
|
|
|
|
|
} |
|
1135
|
|
|
|
|
|
|
$me->set_thickness( 1 ) if $thick; |
|
1136
|
|
|
|
|
|
|
} |
|
1137
|
|
|
|
|
|
|
|
|
1138
|
|
|
|
|
|
|
sub draw_line { |
|
1139
|
|
|
|
|
|
|
my $me = shift; |
|
1140
|
|
|
|
|
|
|
my $data = shift; |
|
1141
|
|
|
|
|
|
|
my $opts = shift; |
|
1142
|
|
|
|
|
|
|
my $shadow = shift; |
|
1143
|
|
|
|
|
|
|
|
|
1144
|
|
|
|
|
|
|
my $im = $me->{img}; |
|
1145
|
|
|
|
|
|
|
my $limit = $me->{limit_factor} * ($me->{xd_max} - $me->{xd_min}) / @$data; |
|
1146
|
|
|
|
|
|
|
my $thick = $opts->{thickness} || $me->{thickness}; |
|
1147
|
|
|
|
|
|
|
my $skipundef = $opts->{skip_undefined} || $me->{skip_undefined}; |
|
1148
|
|
|
|
|
|
|
my $smooth = $opts->{smooth} || $me->{smooth}; |
|
1149
|
|
|
|
|
|
|
my($px, $py, $pxdpt, $pydpt, $pdydx); |
|
1150
|
|
|
|
|
|
|
|
|
1151
|
|
|
|
|
|
|
$thick += $shadow->{dw} if $shadow; |
|
1152
|
|
|
|
|
|
|
$me->set_thickness( $thick ) if $thick; |
|
1153
|
|
|
|
|
|
|
|
|
1154
|
|
|
|
|
|
|
my $shcolor = $shadow ? $me->img_color($shadow->{color} || $me->{shadow_color} ) : undef; |
|
1155
|
|
|
|
|
|
|
|
|
1156
|
|
|
|
|
|
|
foreach my $s ( @$data ){ |
|
1157
|
|
|
|
|
|
|
my $x = $s->{time}; |
|
1158
|
|
|
|
|
|
|
my $y = $s->{value}; |
|
1159
|
|
|
|
|
|
|
|
|
1160
|
|
|
|
|
|
|
next if $x < $me->{xd_min} || $x > $me->{xd_max}; |
|
1161
|
|
|
|
|
|
|
|
|
1162
|
|
|
|
|
|
|
my $xdpt = $me->xdatapt($x); |
|
1163
|
|
|
|
|
|
|
my $ydpt = $me->ydatapt($y); |
|
1164
|
|
|
|
|
|
|
my $dydx = $smooth ? - $s->{dydx} * $me->{yd_scale} / $me->{xd_scale} : undef; |
|
1165
|
|
|
|
|
|
|
|
|
1166
|
|
|
|
|
|
|
if( $shadow ){ |
|
1167
|
|
|
|
|
|
|
$xdpt += $shadow->{dx}; |
|
1168
|
|
|
|
|
|
|
$ydpt += $shadow->{dy}; |
|
1169
|
|
|
|
|
|
|
} |
|
1170
|
|
|
|
|
|
|
|
|
1171
|
|
|
|
|
|
|
if( defined($y) || !$skipundef ){ |
|
1172
|
|
|
|
|
|
|
my $color = $shadow ? $shcolor : $me->color($s, $opts); |
|
1173
|
|
|
|
|
|
|
|
|
1174
|
|
|
|
|
|
|
if( $me->{antialias} && $thick == 1 ){ |
|
1175
|
|
|
|
|
|
|
# GD cannot antialias a thick line |
|
1176
|
|
|
|
|
|
|
$im->setAntiAliased($color); |
|
1177
|
|
|
|
|
|
|
$color = gdAntiAliased; |
|
1178
|
|
|
|
|
|
|
} |
|
1179
|
|
|
|
|
|
|
|
|
1180
|
|
|
|
|
|
|
if( defined($px) && (!$limit || $x - $px <= $limit) ){ |
|
1181
|
|
|
|
|
|
|
if( $smooth ){ |
|
1182
|
|
|
|
|
|
|
next unless defined $s->{dydx}; |
|
1183
|
|
|
|
|
|
|
$me->curve($pxdpt, $pydpt, $pdydx, |
|
1184
|
|
|
|
|
|
|
$xdpt, $ydpt, $dydx, |
|
1185
|
|
|
|
|
|
|
$smooth, \&curve_line, [$color]); |
|
1186
|
|
|
|
|
|
|
}else{ |
|
1187
|
|
|
|
|
|
|
$im->line( $pxdpt, $pydpt, |
|
1188
|
|
|
|
|
|
|
$xdpt, $ydpt, |
|
1189
|
|
|
|
|
|
|
$color ); |
|
1190
|
|
|
|
|
|
|
} |
|
1191
|
|
|
|
|
|
|
}else{ |
|
1192
|
|
|
|
|
|
|
$im->setPixel($xdpt, $ydpt, |
|
1193
|
|
|
|
|
|
|
$color ); |
|
1194
|
|
|
|
|
|
|
} |
|
1195
|
|
|
|
|
|
|
$px = $x; $pxdpt = $xdpt; |
|
1196
|
|
|
|
|
|
|
$py = $y; $pydpt = $ydpt; |
|
1197
|
|
|
|
|
|
|
$pdydx = $dydx; |
|
1198
|
|
|
|
|
|
|
}else{ |
|
1199
|
|
|
|
|
|
|
$px = undef; |
|
1200
|
|
|
|
|
|
|
} |
|
1201
|
|
|
|
|
|
|
} |
|
1202
|
|
|
|
|
|
|
$me->set_thickness( 1 ) if $thick; |
|
1203
|
|
|
|
|
|
|
} |
|
1204
|
|
|
|
|
|
|
|
|
1205
|
|
|
|
|
|
|
# GD has only circular arcs, not bezier or cubic splines |
|
1206
|
|
|
|
|
|
|
# bezier math is easier than trying to use circular arcs |
|
1207
|
|
|
|
|
|
|
sub curve { |
|
1208
|
|
|
|
|
|
|
my $me = shift; |
|
1209
|
|
|
|
|
|
|
my( $x0, $y0, $dydx0, |
|
1210
|
|
|
|
|
|
|
$x1, $y1, $dydx1, |
|
1211
|
|
|
|
|
|
|
$smooth, $fnc, $args ) = @_; |
|
1212
|
|
|
|
|
|
|
|
|
1213
|
|
|
|
|
|
|
# pick bezier control points |
|
1214
|
|
|
|
|
|
|
# smooth = (.5 - 1) gives nice curves |
|
1215
|
|
|
|
|
|
|
# smooth > 1 gives straighter segments |
|
1216
|
|
|
|
|
|
|
# smooth <= .5 takes the graph on a drug trip |
|
1217
|
|
|
|
|
|
|
my $dxt = ($x1 - $x0) / ($smooth * 3); |
|
1218
|
|
|
|
|
|
|
my $cx0 = $x0 + $dxt; |
|
1219
|
|
|
|
|
|
|
my $cx1 = $x1 - $dxt; |
|
1220
|
|
|
|
|
|
|
my $cy0 = $y0 + $dydx0 * $dxt; |
|
1221
|
|
|
|
|
|
|
my $cy1 = $y1 - $dydx1 * $dxt; |
|
1222
|
|
|
|
|
|
|
|
|
1223
|
|
|
|
|
|
|
# bezier coefficients |
|
1224
|
|
|
|
|
|
|
my $ax = - $x0 + 3 * $cx0 - 3 * $cx1 + $x1; |
|
1225
|
|
|
|
|
|
|
my $ay = - $y0 + 3 * $cy0 - 3 * $cy1 + $y1; |
|
1226
|
|
|
|
|
|
|
my $bx = 3 * $x0 - 6 * $cx0 + 3 * $cx1; |
|
1227
|
|
|
|
|
|
|
my $by = 3 * $y0 - 6 * $cy0 + 3 * $cy1; |
|
1228
|
|
|
|
|
|
|
my $cx = - 3 * $x0 + 3 * $cx0; |
|
1229
|
|
|
|
|
|
|
my $cy = - 3 * $y0 + 3 * $cy0; |
|
1230
|
|
|
|
|
|
|
my $dx = $x0; |
|
1231
|
|
|
|
|
|
|
my $dy = $y0; |
|
1232
|
|
|
|
|
|
|
|
|
1233
|
|
|
|
|
|
|
# draw bezier curve |
|
1234
|
|
|
|
|
|
|
my $px = $x0; |
|
1235
|
|
|
|
|
|
|
my $py = $y0; |
|
1236
|
|
|
|
|
|
|
|
|
1237
|
|
|
|
|
|
|
# my $im = $me->{img}; |
|
1238
|
|
|
|
|
|
|
# $im->line($x0,$y0, $cx0,$cy0, $me->img_color('00ff00')); |
|
1239
|
|
|
|
|
|
|
# $im->line($x1,$y1, $cx1,$cy1, $me->img_color('00ff00')); |
|
1240
|
|
|
|
|
|
|
# $im->line($cx0,$cy0, $cx1,$cy1, $me->img_color('0000ff')); |
|
1241
|
|
|
|
|
|
|
|
|
1242
|
|
|
|
|
|
|
my $ymax = $me->{height} - $me->{margin_bottom}; |
|
1243
|
|
|
|
|
|
|
my $ymin = $me->{margin_top}; |
|
1244
|
|
|
|
|
|
|
|
|
1245
|
|
|
|
|
|
|
my $T = ($x1 - $x0) + abs($y1 - $y0); |
|
1246
|
|
|
|
|
|
|
for my $tt (1 .. $T){ |
|
1247
|
|
|
|
|
|
|
my $t = $tt / $T; |
|
1248
|
|
|
|
|
|
|
my $x = $ax * $t**3 + $bx * $t**2 + $cx * $t + $dx; |
|
1249
|
|
|
|
|
|
|
my $y = $ay * $t**3 + $by * $t**2 + $cy * $t + $dy; |
|
1250
|
|
|
|
|
|
|
|
|
1251
|
|
|
|
|
|
|
# QQQ - handle out-of-bounds segments how? |
|
1252
|
|
|
|
|
|
|
if( $y >= $ymin && $y <= $ymax && $py >= $ymin && $py <= $ymax ){ |
|
1253
|
|
|
|
|
|
|
$fnc->($me, $px,$py, $x,$y, 0, @$args); |
|
1254
|
|
|
|
|
|
|
}else{ |
|
1255
|
|
|
|
|
|
|
$fnc->($me, $px,$py, $x,$y, [$ymin, $ymax], @$args); |
|
1256
|
|
|
|
|
|
|
} |
|
1257
|
|
|
|
|
|
|
$px = $x; $py = $y; |
|
1258
|
|
|
|
|
|
|
} |
|
1259
|
|
|
|
|
|
|
} |
|
1260
|
|
|
|
|
|
|
|
|
1261
|
|
|
|
|
|
|
sub curve_line { |
|
1262
|
|
|
|
|
|
|
my $me = shift; |
|
1263
|
|
|
|
|
|
|
my ($px, $py, $x, $y, $oob, $color) = @_; |
|
1264
|
|
|
|
|
|
|
|
|
1265
|
|
|
|
|
|
|
return if $oob; |
|
1266
|
|
|
|
|
|
|
$me->{img}->line($px,$py, $x,$y, $color); |
|
1267
|
|
|
|
|
|
|
} |
|
1268
|
|
|
|
|
|
|
|
|
1269
|
|
|
|
|
|
|
sub curve_filled { |
|
1270
|
|
|
|
|
|
|
my $me = shift; |
|
1271
|
|
|
|
|
|
|
my ($px, $py, $x, $y, $oob, $color, $y0) = @_; |
|
1272
|
|
|
|
|
|
|
|
|
1273
|
|
|
|
|
|
|
if( $oob ){ |
|
1274
|
|
|
|
|
|
|
my($ymin, $ymax) = @$oob; |
|
1275
|
|
|
|
|
|
|
$y = $ymin if $y < $ymin; |
|
1276
|
|
|
|
|
|
|
$py = $ymin if $py < $ymin; |
|
1277
|
|
|
|
|
|
|
$y = $ymax if $y > $ymax; |
|
1278
|
|
|
|
|
|
|
$py = $ymax if $py > $ymax; |
|
1279
|
|
|
|
|
|
|
} |
|
1280
|
|
|
|
|
|
|
|
|
1281
|
|
|
|
|
|
|
my $poly = GD::Polygon->new; |
|
1282
|
|
|
|
|
|
|
$poly->addPt($px, $y0); |
|
1283
|
|
|
|
|
|
|
$poly->addPt($px, $py); |
|
1284
|
|
|
|
|
|
|
$poly->addPt($x, $y); |
|
1285
|
|
|
|
|
|
|
$poly->addPt($x, $y0); |
|
1286
|
|
|
|
|
|
|
$me->{img}->filledPolygon($poly, $color); |
|
1287
|
|
|
|
|
|
|
} |
|
1288
|
|
|
|
|
|
|
|
|
1289
|
|
|
|
|
|
|
|
|
1290
|
|
|
|
|
|
|
sub draw_range { |
|
1291
|
|
|
|
|
|
|
my $me = shift; |
|
1292
|
|
|
|
|
|
|
my $data = shift; |
|
1293
|
|
|
|
|
|
|
my $opts = shift; |
|
1294
|
|
|
|
|
|
|
my $shadow = shift; |
|
1295
|
|
|
|
|
|
|
|
|
1296
|
|
|
|
|
|
|
return if $shadow; |
|
1297
|
|
|
|
|
|
|
my $im = $me->{img}; |
|
1298
|
|
|
|
|
|
|
my $limit = $me->{limit_factor} * ($me->{xd_max} - $me->{xd_min}) / @$data; |
|
1299
|
|
|
|
|
|
|
my $skipundef = $opts->{skip_undefined} || $me->{skip_undefined}; |
|
1300
|
|
|
|
|
|
|
my($px, $pn, $pm, $pxdpt); |
|
1301
|
|
|
|
|
|
|
|
|
1302
|
|
|
|
|
|
|
foreach my $s ( @$data ){ |
|
1303
|
|
|
|
|
|
|
my $x = $s->{time}; |
|
1304
|
|
|
|
|
|
|
my $a = defined $s->{min} ? $s->{min} : $s->{value}; |
|
1305
|
|
|
|
|
|
|
my $b = defined $s->{max} ? $s->{max} : $s->{value}; |
|
1306
|
|
|
|
|
|
|
my $xdpt = $me->xdatapt($x); |
|
1307
|
|
|
|
|
|
|
|
|
1308
|
|
|
|
|
|
|
next if $x < $me->{xd_min} || $x > $me->{xd_max}; |
|
1309
|
|
|
|
|
|
|
|
|
1310
|
|
|
|
|
|
|
$a = $b if !defined($a) && $skipundef; |
|
1311
|
|
|
|
|
|
|
$b = $a if !defined($b) && $skipundef; |
|
1312
|
|
|
|
|
|
|
|
|
1313
|
|
|
|
|
|
|
if( defined($a) || !$skipundef ){ |
|
1314
|
|
|
|
|
|
|
|
|
1315
|
|
|
|
|
|
|
if( defined($px) && ($xdpt - $pxdpt > 1) && (!$limit || $x - $px <= $limit) ){ |
|
1316
|
|
|
|
|
|
|
my $poly = GD::Polygon->new; |
|
1317
|
|
|
|
|
|
|
$poly->addPt($pxdpt, $me->ydatapt($pn)); |
|
1318
|
|
|
|
|
|
|
$poly->addPt($pxdpt, $me->ydatapt($pm)); |
|
1319
|
|
|
|
|
|
|
$poly->addPt($xdpt, $me->ydatapt($b)); |
|
1320
|
|
|
|
|
|
|
$poly->addPt($xdpt, $me->ydatapt($a)); |
|
1321
|
|
|
|
|
|
|
$im->filledPolygon($poly, $me->color($s, $opts)); |
|
1322
|
|
|
|
|
|
|
}else{ |
|
1323
|
|
|
|
|
|
|
$im->line( $xdpt, $me->ydatapt($b), |
|
1324
|
|
|
|
|
|
|
$xdpt, $me->ydatapt($a), |
|
1325
|
|
|
|
|
|
|
$me->color($s, $opts) ); |
|
1326
|
|
|
|
|
|
|
} |
|
1327
|
|
|
|
|
|
|
$px = $x; $pn = $a; $pm = $b; |
|
1328
|
|
|
|
|
|
|
$pxdpt = $xdpt; |
|
1329
|
|
|
|
|
|
|
}else{ |
|
1330
|
|
|
|
|
|
|
$px = undef; |
|
1331
|
|
|
|
|
|
|
} |
|
1332
|
|
|
|
|
|
|
} |
|
1333
|
|
|
|
|
|
|
} |
|
1334
|
|
|
|
|
|
|
|
|
1335
|
|
|
|
|
|
|
sub draw_points { |
|
1336
|
|
|
|
|
|
|
my $me = shift; |
|
1337
|
|
|
|
|
|
|
my $data = shift; |
|
1338
|
|
|
|
|
|
|
my $opts = shift; |
|
1339
|
|
|
|
|
|
|
my $shadow = shift; |
|
1340
|
|
|
|
|
|
|
|
|
1341
|
|
|
|
|
|
|
my $im = $me->{img}; |
|
1342
|
|
|
|
|
|
|
my $skipundef = $opts->{skip_undefined} || $me->{skip_undefined}; |
|
1343
|
|
|
|
|
|
|
my $shcolor = $shadow ? $me->img_color($shadow->{color} || $me->{shadow_color} ) : undef; |
|
1344
|
|
|
|
|
|
|
|
|
1345
|
|
|
|
|
|
|
foreach my $s ( @$data ){ |
|
1346
|
|
|
|
|
|
|
my $x = $s->{time}; |
|
1347
|
|
|
|
|
|
|
my $y = $s->{value}; |
|
1348
|
|
|
|
|
|
|
my $d = $s->{diam} || $opts->{diam} || 4; |
|
1349
|
|
|
|
|
|
|
my $c = $shadow ? $shcolor : $me->color($s, $opts); |
|
1350
|
|
|
|
|
|
|
|
|
1351
|
|
|
|
|
|
|
next if $x < $me->{xd_min} || $x > $me->{xd_max}; |
|
1352
|
|
|
|
|
|
|
next if !defined($y) && $skipundef; |
|
1353
|
|
|
|
|
|
|
my $xdpt = $me->xdatapt($x); |
|
1354
|
|
|
|
|
|
|
my $ydpt = $me->ydatapt($y); |
|
1355
|
|
|
|
|
|
|
|
|
1356
|
|
|
|
|
|
|
if( $shadow ){ |
|
1357
|
|
|
|
|
|
|
$d += $shadow->{dw}; |
|
1358
|
|
|
|
|
|
|
$xdpt += $shadow->{dx}; |
|
1359
|
|
|
|
|
|
|
$ydpt += $shadow->{dy}; |
|
1360
|
|
|
|
|
|
|
} |
|
1361
|
|
|
|
|
|
|
|
|
1362
|
|
|
|
|
|
|
while( $d > 0 ){ |
|
1363
|
|
|
|
|
|
|
$im->arc( $xdpt, $ydpt, |
|
1364
|
|
|
|
|
|
|
$d, $d, 0, 360, |
|
1365
|
|
|
|
|
|
|
$c ); |
|
1366
|
|
|
|
|
|
|
$d -= 2; |
|
1367
|
|
|
|
|
|
|
} |
|
1368
|
|
|
|
|
|
|
} |
|
1369
|
|
|
|
|
|
|
} |
|
1370
|
|
|
|
|
|
|
|
|
1371
|
|
|
|
|
|
|
sub def_box_width { |
|
1372
|
|
|
|
|
|
|
my $ta = shift; |
|
1373
|
|
|
|
|
|
|
my $tb = shift; |
|
1374
|
|
|
|
|
|
|
my $nd = shift; |
|
1375
|
|
|
|
|
|
|
|
|
1376
|
|
|
|
|
|
|
return ($tb - $ta) / ($nd - 1) if $nd > 1; |
|
1377
|
|
|
|
|
|
|
return ($tb - $ta) / $nd if $nd; |
|
1378
|
|
|
|
|
|
|
1; |
|
1379
|
|
|
|
|
|
|
} |
|
1380
|
|
|
|
|
|
|
|
|
1381
|
|
|
|
|
|
|
sub draw_boxes { |
|
1382
|
|
|
|
|
|
|
my $me = shift; |
|
1383
|
|
|
|
|
|
|
my $data = shift; |
|
1384
|
|
|
|
|
|
|
my $opts = shift; |
|
1385
|
|
|
|
|
|
|
my $shadow = shift; |
|
1386
|
|
|
|
|
|
|
|
|
1387
|
|
|
|
|
|
|
my $im = $me->{img}; |
|
1388
|
|
|
|
|
|
|
my $defwid = def_box_width($data->[0]{time}, $data->[-1]{time}, scalar(@$data)); |
|
1389
|
|
|
|
|
|
|
my $thick = $opts->{thickness} || $me->{thickness}; |
|
1390
|
|
|
|
|
|
|
my $skipundef = $opts->{skip_undefined} || $me->{skip_undefined}; |
|
1391
|
|
|
|
|
|
|
my $shcolor = $shadow ? $me->img_color($shadow->{color} || $me->{shadow_color} ) : undef; |
|
1392
|
|
|
|
|
|
|
|
|
1393
|
|
|
|
|
|
|
$thick += $shadow->{dw} if $shadow; |
|
1394
|
|
|
|
|
|
|
$me->set_thickness( $thick ) if $thick; |
|
1395
|
|
|
|
|
|
|
|
|
1396
|
|
|
|
|
|
|
foreach my $s ( @$data ){ |
|
1397
|
|
|
|
|
|
|
my $x = $s->{time}; |
|
1398
|
|
|
|
|
|
|
my $y = $s->{value}; |
|
1399
|
|
|
|
|
|
|
my $w = $s->{width} || $opts->{width} || $me->{boxwidth} || $defwid; |
|
1400
|
|
|
|
|
|
|
my $y0 = $opts->{boxbase} || $me->{boxbase} || 0; |
|
1401
|
|
|
|
|
|
|
my $c = $shadow ? $shcolor : $me->color($s, $opts); |
|
1402
|
|
|
|
|
|
|
|
|
1403
|
|
|
|
|
|
|
next if $x < $me->{xd_min} || $x > $me->{xd_max}; |
|
1404
|
|
|
|
|
|
|
next if !defined($y) && $skipundef; |
|
1405
|
|
|
|
|
|
|
|
|
1406
|
|
|
|
|
|
|
# because GD cares... |
|
1407
|
|
|
|
|
|
|
my $ya = $me->ydatapt($y > $y0 ? $y : $y0); |
|
1408
|
|
|
|
|
|
|
my $yb = $me->ydatapt($y > $y0 ? $y0 : $y); |
|
1409
|
|
|
|
|
|
|
my $xa = $me->xdatapt($x - $w/2); |
|
1410
|
|
|
|
|
|
|
my $xb = $me->xdatapt($x + $w/2); |
|
1411
|
|
|
|
|
|
|
|
|
1412
|
|
|
|
|
|
|
if( $shadow ){ |
|
1413
|
|
|
|
|
|
|
$xa += $shadow->{dx}; |
|
1414
|
|
|
|
|
|
|
$xb += $shadow->{dx}; |
|
1415
|
|
|
|
|
|
|
$ya += $shadow->{dy}; |
|
1416
|
|
|
|
|
|
|
$yb += $shadow->{dy}; |
|
1417
|
|
|
|
|
|
|
} |
|
1418
|
|
|
|
|
|
|
|
|
1419
|
|
|
|
|
|
|
if( $opts->{filled} || $s->{filled} ){ |
|
1420
|
|
|
|
|
|
|
$im->filledRectangle( $xa, $ya, $xb, $yb, $c); |
|
1421
|
|
|
|
|
|
|
}else{ |
|
1422
|
|
|
|
|
|
|
$im->rectangle( $xa, $ya, $xb, $yb, $c); |
|
1423
|
|
|
|
|
|
|
} |
|
1424
|
|
|
|
|
|
|
} |
|
1425
|
|
|
|
|
|
|
|
|
1426
|
|
|
|
|
|
|
$me->set_thickness( 1 ) if $thick; |
|
1427
|
|
|
|
|
|
|
} |
|
1428
|
|
|
|
|
|
|
|
|
1429
|
|
|
|
|
|
|
|
|
1430
|
|
|
|
|
|
|
=head1 EXAMPLE IMAGES |
|
1431
|
|
|
|
|
|
|
|
|
1432
|
|
|
|
|
|
|
http://argus.tcp4me.com/shots.html |
|
1433
|
|
|
|
|
|
|
http://search.cpan.org/src/JAW/Chart-Strip-1.07/eg/index.html |
|
1434
|
|
|
|
|
|
|
|
|
1435
|
|
|
|
|
|
|
=head1 LICENSE |
|
1436
|
|
|
|
|
|
|
|
|
1437
|
|
|
|
|
|
|
This software may be copied and distributed under the terms |
|
1438
|
|
|
|
|
|
|
found in the Perl "Artistic License". |
|
1439
|
|
|
|
|
|
|
|
|
1440
|
|
|
|
|
|
|
A copy of the "Artistic License" may be found in the standard |
|
1441
|
|
|
|
|
|
|
Perl distribution. |
|
1442
|
|
|
|
|
|
|
|
|
1443
|
|
|
|
|
|
|
=head1 BUGS |
|
1444
|
|
|
|
|
|
|
|
|
1445
|
|
|
|
|
|
|
There are no known bugs in the module. |
|
1446
|
|
|
|
|
|
|
|
|
1447
|
|
|
|
|
|
|
=head1 SEE ALSO |
|
1448
|
|
|
|
|
|
|
|
|
1449
|
|
|
|
|
|
|
Yellowstone National Park. |
|
1450
|
|
|
|
|
|
|
|
|
1451
|
|
|
|
|
|
|
=head1 AUTHOR |
|
1452
|
|
|
|
|
|
|
|
|
1453
|
|
|
|
|
|
|
Jeff Weisberg - http://www.tcp4me.com |
|
1454
|
|
|
|
|
|
|
|
|
1455
|
|
|
|
|
|
|
=cut |
|
1456
|
|
|
|
|
|
|
; |
|
1457
|
|
|
|
|
|
|
|
|
1458
|
|
|
|
|
|
|
1; |