Neel
Bioinformatics Beginner
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Construct a heatmap with perl
By Neel 2695 days ago
#!/bin/env perl
use strict;
use warnings;
use Imager::Heatmap;
my $hmap = Imager::Heatmap->new(
xsize => 640, # Image width
ysize => 480, # Image height
xsigma => 10, # Sigma value of X-direction
ysigma => 10, # Sigma value of Y-direction
);
# @point_datas should be: ( [ x1, y1, weight1 ], [ x2, y2, weight2 ] ... )
my @point_datas = ( [ 10, 20, 50 ], [ 20, 40, 70 ] );
# Add point datas to construct density matrix
$hmap->insert_datas(@point_datas);
# After adding datas, get heatmap as Imager instance.
my $img = $hmap->draw;
# create png file in current directory
$img->write( file => './hm.png' );
