Viewing file:  sample56.pl (1.16 KB) -rw-r--r--
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use GD::Graph::lines;
require 'save.pl';
print STDERR "Processing sample56 (experimental)\n";
my $path = $ENV{GDGRAPH_SAMPLES_PATH} ? $ENV{GDGRAPH_SAMPLES_PATH} : '';
@data = read_data("${path}sample54.dat")
or die "Cannot read data from ${path}sample54.dat";
$my_graph = new GD::Graph::lines();
$my_graph->set(
x_label => 'Wavelength (nm)',
y_label => 'Absorbance',
title => 'Numerical X axis',
y_min_value => 0,
y_max_value => 2,
y_tick_number => 8,
y_label_skip => 4,
x_tick_number => 14,
x_min_value => 100,
x_max_value => 800,
x_ticks => 1,
x_tick_length => -4,
x_long_ticks => 1,
x_label_skip => 2,
x_tick_offset => 2,
no_axes => 1,
line_width => 2,
x_label_position => 1/2,
r_margin => 15,
transparent => 0,
);
$my_graph->set_legend('Thanks to Scott Prahl and Gary Deschaines');
$my_graph->plot(\@data);
save_chart($my_graph, 'sample56');
sub read_data
{
my $fn = shift;
local(*ZZZ);
my @d = ();
open(ZZZ, $fn) || return ();
while (<ZZZ>)
{
chomp;
my @row = split;
for (my $i = 0; $i <= $#row; $i++)
{
undef $row[$i] if ($row[$i] eq 'undef');
unshift @{$d[$i]}, $row[$i];
}
}
close (ZZZ);
return @d;
}
1;
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