/usr/share/doc/libgd-graph-perl/examples/samples/sample55.pl is in libgd-graph-perl 1.48-2.
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 | use strict;
use GD::Graph::lines;
require 'save.pl';
use constant PI => 4 * atan2(1,1);
print STDERR "Processing sample55\n";
my @x = map {$_ * 3 * PI/100} (0 .. 100);
my @y = map sin, @x;
my @z = map cos, @x;
my @data = (\@x,\@y,\@z);
my $my_graph = new GD::Graph::lines();
$my_graph->set(
x_label => 'Angle (Radians)',
y_label => 'Trig Function Value',
x_tick_number => 'auto',
y_tick_number => 'auto',
title => 'Sine and Cosine',
line_width => 1,
x_label_position => 1/2,
r_margin => 15,
transparent => 0,
);
$my_graph->set_legend('Thanks to Scott Prahl');
$my_graph->plot(\@data);
save_chart($my_graph, 'sample55');
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