Perl ABC

Histogram graph/Statistical analysis by PDL

Use the histogram method to draw a histogram graph in PDL::Graphics::PLplot .

[f: id: perlcodeexample: 20131107121226p: image: w500]

use strict;
use warnings;

use PDL;
use PDL::Graphics::PLplot;

# Create PLPlot object
my $pl = PDL::Graphics::PLplot->new(DEV =>'png', FILE =>'graph.png');

# x value
my $x = pdl [1, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 5, 5, 5, 6, 7, 7, 7, 7, 8, 8, 10] ;
my $bin_count = 5;

# Create a histogram graph
$pl->histogram(
   $x,
   $bin_count,
   BOX => [0, 10, 0, 20],
   TITLE =>'histogram'
);

# Close
$pl->close;

Statistical analysis by PDL