/usr/share/perl5/Chart/ErrorBars.pm is in libchart-perl 2.4.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 | ## @file
# Implementation of Chart::ErrorBars
#
# written by
# @author david bonner (dbonner@cs.bu.edu)
#
# maintained by the
# @author Chart Group at Geodetic Fundamental Station Wettzell (Chart@fs.wettzell.de)
# @date 2012-01-06
# @version 2.4.4
#
package Chart::ErrorBars;
use Chart::Base '2.4.4';
use GD;
use Carp;
use strict;
@Chart::ErrorBars::ISA = qw(Chart::Base);
$Chart::ErrorBars::VERSION = '2.4.4';
## @class Chart::ErrorBars
# ErrorBars class derived from class Base.
#
# This class provides all functions which are specific to
# pointes having carrying vertical bars which represent
# errors or standard deviations
#
#>>>>>>>>>>>>>>>>>>>>>>>>>>#
# public methods go here #
#<<<<<<<<<<<<<<<<<<<<<<<<<<#
#>>>>>>>>>>>>>>>>>>>>>>>>>>>#
# private methods go here #
#<<<<<<<<<<<<<<<<<<<<<<<<<<<#
## @fn private _draw_data
# finally get around to plotting the data
#
# Overwrites Base function
#
sub _draw_data
{
my $self = shift;
my $data = $self->{'dataref'};
my $misccolor = $self->_color_role_to_index('misc');
my ( $x1, $x2, $x3, $y1, $y2, $y3, $mod, $y_error_up, $y_error_down );
my ( $width, $height, $delta, $map, $delta_num, $zero_offset, $flag );
my ( $i, $j, $color, $brush );
my $dataset = 0;
my $diff;
# init the imagemap data field if they want it
if ( $self->true( $self->{'imagemap'} ) )
{
$self->{'imagemap_data'} = [];
}
# find the delta value between data points, as well
# as the mapping constant
$width = $self->{'curr_x_max'} - $self->{'curr_x_min'};
$height = $self->{'curr_y_max'} - $self->{'curr_y_min'};
$delta = $width / ( $self->{'num_datapoints'} > 0 ? $self->{'num_datapoints'} : 1 );
$diff = $self->{'max_val'} - $self->{'min_val'};
$diff = 1 if $diff == 0;
$map = $height / $diff;
# for a xy-plot, use this delta and maybe an offset for the zero-axes
if ( $self->true( $self->{'xy_plot'} ) )
{
$diff = $self->{'x_max_val'} - $self->{'x_min_val'};
$diff = 1 if $diff == 0;
$delta_num = $width / $diff;
if ( $self->{'x_min_val'} <= 0 && $self->{'x_max_val'} >= 0 )
{
$zero_offset = abs( $self->{'x_min_val'} ) * abs($delta_num);
}
elsif ( $self->{'x_min_val'} > 0 || $self->{'x_max_val'} < 0 )
{
$zero_offset = -$self->{'x_min_val'} * $delta_num;
}
else
{
$zero_offset = 0;
}
}
# get the base x-y values
if ( $self->false( $self->{'xy_plot'} ) )
{
$x1 = $self->{'curr_x_min'} + ( $delta / 2 );
}
else
{
$x1 = $self->{'curr_x_min'};
}
if ( $self->{'min_val'} >= 0 )
{
$y1 = $self->{'curr_y_max'};
$mod = $self->{'min_val'};
}
elsif ( $self->{'max_val'} <= 0 )
{
$y1 = $self->{'curr_y_min'};
$mod = $self->{'max_val'};
}
else
{
$y1 = $self->{'curr_y_min'} + ( $map * $self->{'max_val'} );
$mod = 0;
$self->{'gd_obj'}->line( $self->{'curr_x_min'}, $y1, $self->{'curr_x_max'}, $y1, $misccolor );
}
# first of all box it off
$self->{'gd_obj'}
->rectangle( $self->{'curr_x_min'}, $self->{'curr_y_min'}, $self->{'curr_x_max'}, $self->{'curr_y_max'}, $misccolor );
# draw the points
for $i ( 1 .. $self->{'num_datasets'} )
{
if ( $self->false( $self->{'same_error'} ) )
{
# get the color for this dataset, and set the brush
$color = $self->_color_role_to_index( 'dataset' . ($dataset) ); # draw every point for this dataset
$dataset++ if ( ( $i - 1 ) % 3 == 0 );
for $j ( 0 .. $self->{'num_datapoints'} )
{
#get the brush for points
$brush = $self->_prepare_brush( $color, 'point' );
$self->{'gd_obj'}->setBrush($brush);
# only draw if the current set is really a dataset and no errorset
if ( ( $i - 1 ) % 3 == 0 )
{
# don't try to draw anything if there's no data
if ( defined( $data->[$i][$j] ) )
{
if ( $self->true( $self->{'xy_plot'} ) )
{
$x2 = $x1 + $delta_num * $data->[0][$j] + $zero_offset + 1;
$x3 = $x2;
}
else
{
$x2 = $x1 + ( $delta * $j ) + 1;
$x3 = $x2;
}
$y2 = $y1 - ( ( $data->[$i][$j] - $mod ) * $map );
$y3 = $y2;
$y_error_up = $y2 - abs( $data->[ $i + 1 ][$j] ) * $map;
$y_error_down = $y2 + abs( $data->[ $i + 2 ][$j] ) * $map;
# draw the point only if it is within the chart borders
if ( $data->[$i][$j] <= $self->{'max_val'}
&& $data->[$i][$j] >= $self->{'min_val'} )
{
$self->{'gd_obj'}->line( $x2, $y2, $x3, $y3, gdBrushed );
$flag = 'true';
}
#reset the brush for lines
$brush = $self->_prepare_brush( $color, 'line' );
$self->{'gd_obj'}->setBrush($brush);
#draw the error bars
if ( $self->true($flag) )
{
# the upper lines
$self->{'gd_obj'}->line( $x2, $y2, $x3, $y_error_up, gdBrushed );
$self->{'gd_obj'}->line( $x2 - 3, $y_error_up, $x3 + 3, $y_error_up, gdBrushed );
# the down lines
$self->{'gd_obj'}->line( $x2, $y2, $x3, $y_error_down, gdBrushed );
$self->{'gd_obj'}->line( $x2 - 3, $y_error_down, $x3 + 3, $y_error_down, gdBrushed );
$flag = 'false';
}
# store the imagemap data if they asked for it
if ( $self->true( $self->{'imagemap'} ) )
{
$self->{'imagemap_data'}->[$i][$j] = [ $x2, $y2 ];
}
}
}
}
}
else
{
# get the color for this dataset, and set the brush
$color = $self->_color_role_to_index( 'dataset' . ($dataset) ); # draw every point for this dataset
$dataset++ if ( ( $i - 1 ) % 2 == 0 );
for $j ( 0 .. $self->{'num_datapoints'} )
{
#get the brush for points
$brush = $self->_prepare_brush( $color, 'point' );
$self->{'gd_obj'}->setBrush($brush);
# only draw if the current set is really a dataset and no errorset
if ( ( $i - 1 ) % 2 == 0 )
{
# don't try to draw anything if there's no data
if ( defined( $data->[$i][$j] ) )
{
if ( $self->true( $self->{'xy_plot'} ) )
{
$x2 = $x1 + $delta_num * $data->[0][$j] + $zero_offset;
$x3 = $x2;
}
else
{
$x2 = $x1 + ( $delta * $j );
$x3 = $x2;
}
$y2 = $y1 - ( ( $data->[$i][$j] - $mod ) * $map );
$y3 = $y2;
$y_error_up = $y2 - abs( $data->[ $i + 1 ][$j] ) * $map;
$y_error_down = $y2 + abs( $data->[ $i + 1 ][$j] ) * $map;
# draw the point only if it is within the chart borders
if ( $data->[$i][$j] <= $self->{'max_val'}
&& $data->[$i][$j] >= $self->{'min_val'} )
{
$self->{'gd_obj'}->line( $x2, $y2, $x3, $y3, gdBrushed );
$flag = 'true';
}
#reset the brush for lines
$brush = $self->_prepare_brush( $color, 'line' );
$self->{'gd_obj'}->setBrush($brush);
#draw the error bars
if ( $self->true($flag) )
{
# the upper lines
$self->{'gd_obj'}->line( $x2, $y2, $x3, $y_error_up, gdBrushed );
$self->{'gd_obj'}->line( $x2 - 3, $y_error_up, $x3 + 3, $y_error_up, gdBrushed );
# the down lines
$self->{'gd_obj'}->line( $x2, $y2, $x3, $y_error_down, gdBrushed );
$self->{'gd_obj'}->line( $x2 - 3, $y_error_down, $x3 + 3, $y_error_down, gdBrushed );
$flag = 'false';
}
# store the imagemap data if they asked for it
if ( $self->true( $self->{'imagemap'} ) )
{
$self->{'imagemap_data'}->[$i][$j] = [ $x2, $y2 ];
}
}
} #end for
}
}
}
return 1;
}
## @fn private _prepare_brush
# set the gdBrush object to trick GD into drawing fat lines
#
# Overwrite Base function
#
sub _prepare_brush
{
my $self = shift;
my $color = shift;
my $type = shift;
my ( $radius, @rgb, $brush, $white, $newcolor );
# get the rgb values for the desired color
@rgb = $self->{'gd_obj'}->rgb($color);
# get the appropriate brush size
if ( $type eq 'line' )
{
$radius = $self->{'brush_size'} / 2;
}
elsif ( $type eq 'point' )
{
$radius = $self->{'pt_size'} / 2;
}
# create the new image
$brush = GD::Image->new( $radius * 2, $radius * 2 );
# get the colors, make the background transparent
$white = $brush->colorAllocate( 255, 255, 255 );
$newcolor = $brush->colorAllocate(@rgb);
$brush->transparent($white);
# draw the circle
$brush->arc( $radius - 1, $radius - 1, $radius, $radius, 0, 360, $newcolor );
# fill it if we're using lines
$brush->fill( $radius - 1, $radius - 1, $newcolor );
# set the new image as the main object's brush
return $brush;
}
## @fn private int _draw_legend()
# let them know what all the pretty colors mean
# @return status
## let them know what all the pretty colors mean
sub _draw_legend
{
my $self = shift;
my ( $length, $step, $temp, $post_length );
my $j = 0;
# check to see if legend type is none..
if ( $self->{'legend'} =~ /^none$/ )
{
return 1;
}
#just for later checking and warning
if ( $#{ $self->{'legend_labels'} } >= 0 )
{
$post_length = scalar( @{ $self->{'legend_labels'} } );
}
#look if every second or eyery third dataset is a set for data
if ( $self->false( $self->{'same_error'} ) )
{
$step = 3;
}
else
{
$step = 2;
}
# init a field to store the length of the longest legend label
unless ( $self->{'max_legend_label'} )
{
$self->{'max_legend_label'} = 0;
}
# fill in the legend labels, find the longest one
for ( my $i = 1 ; $i < $self->{'num_datasets'} ; $i += $step )
{
my $label = $j + 1;
unless ( $self->{'legend_labels'}[$j] )
{
$self->{'legend_labels'}[$j] = "Dataset $label";
}
$length = length( $self->{'legend_labels'}[$j] );
if ( $length > $self->{'max_legend_label'} )
{
$self->{'max_legend_label'} = $length;
}
$j++;
}
#we just have to label the datasets in the legend
#we'll reset it, to draw the sets
$temp = $self->{'num_datasets'};
$self->{'num_datasets'} = $j;
# check to see if they have as many labels as datasets,
# warn them if not
if ( ( $post_length > 0 ) && ( $post_length != $j ) )
{
carp "The number of legend labels and datasets doesn\'t match";
}
# different legend types
if ( $self->{'legend'} eq 'bottom' )
{
$self->_draw_bottom_legend;
}
elsif ( $self->{'legend'} eq 'right' )
{
$self->_draw_right_legend;
}
elsif ( $self->{'legend'} eq 'left' )
{
$self->_draw_left_legend;
}
elsif ( $self->{'legend'} eq 'top' )
{
$self->_draw_top_legend;
}
else
{
carp "I can't put a legend there (at " . $self->{'legend'} . ")\n";
}
#reset the number of dataset to make sure that everything goes right
$self->{'num_datasets'} = $temp;
# and return
return 1;
}
#find the range of the x scale, don't forget the errors!
sub _find_y_range
{
my $self = shift;
my $data = $self->{'dataref'};
my $max = undef;
my $min = undef;
if ( $self->false( $self->{'same_error'} ) )
{
for my $i ( 1 .. $self->{'num_datasets'} )
{
if ( ( $i - 1 ) % 3 == 0 )
{
for my $j ( 0 .. $self->{'num_datapoints'} )
{
if ( defined( $data->[$i][$j] ) && defined( $data->[ $i + 1 ][$j] ) && defined( $data->[ $i + 2 ][$j] ) )
{
if ( defined $max )
{
if ( ( $data->[$i][$j] + abs( $data->[ $i + 1 ][$j] ) ) > $max )
{
$max = $data->[$i][$j] + abs( $data->[ $i + 1 ][$j] );
}
if ( ( $data->[$i][$j] - abs( $data->[ $i + 2 ][$j] ) ) < $min )
{
$min = $data->[$i][$j] - abs( $data->[ $i + 2 ][$j] );
}
}
else { $min = $max = $data->[$i][$j]; }
}
}
}
}
return ( $min, $max );
}
else
{
for my $i ( 1 .. $self->{'num_datasets'} )
{
if ( ( $i - 1 ) % 2 == 0 )
{
for my $j ( 0 .. $self->{'num_datapoints'} )
{
if ( defined( $data->[$i][$j] ) && defined( $data->[ $i + 1 ][$j] ) )
{
if ( defined $max )
{
if ( ( $data->[$i][$j] + $data->[ $i + 1 ][$j] ) > $max )
{
$max = $data->[$i][$j] + $data->[ $i + 1 ][$j];
}
if ( ( $data->[$i][$j] - $data->[ $i + 1 ][$j] ) < $min )
{
$min = $data->[$i][$j] - $data->[ $i + 1 ][$j];
}
}
else { $min = $max = $data->[$i][$j]; }
}
}
}
}
return ( $min, $max );
}
}
## be a good module and return 1
1;
|