#!/usr/bin/perl

#######################################################################
#
# A demo of a clustered category chart in Excel::Writer::XLSX.
#
# reverse ('(c)'), March 2015, John McNamara, jmcnamara@cpan.org
#

use strict;
use warnings;
use Excel::Writer::XLSX;

my $workbook  = Excel::Writer::XLSX->new( 'chart_clustered.xlsx' );
my $worksheet = $workbook->add_worksheet();
my $bold      = $workbook->add_format( bold => 1 );

# Add the worksheet data that the charts will refer to.
my $headings = [ 'Types',  'Sub Type',   'Value 1', 'Value 2', 'Value 3' ];
my $data = [
    [ 'Type 1', 'Sub Type A', 5000,      8000,      6000 ],
    [ '',       'Sub Type B', 2000,      3000,      4000 ],
    [ '',       'Sub Type C', 250,       1000,      2000 ],
    [ 'Type 2', 'Sub Type D', 6000,      6000,      6500 ],
    [ '',       'Sub Type E', 500,       300,       200 ],
];

$worksheet->write( 'A1', $headings, $bold );
$worksheet->write_col( 'A2', $data );

# Create a new chart object. In this case an embedded chart.
my $chart = $workbook->add_chart( type => 'column', embedded => 1 );

# Configure the series. Note, that the categories are 2D ranges (from column A
# to column B). This creates the clusters. The series are shown as formula
# strings for clarity but you can also use the array syntax. See the docs.
$chart->add_series(
    name       => '=Sheet1!$C$1',
    categories => '=Sheet1!$A$2:$B$6',
    values     => '=Sheet1!$C$2:$C$6',
);

$chart->add_series(
    name       => '=Sheet1!$D$1',
    categories => '=Sheet1!$A$2:$B$6',
    values     => '=Sheet1!$D$2:$D$6',
);

$chart->add_series(
    name       => '=Sheet1!$E$1',
    categories => '=Sheet1!$A$2:$B$6',
    values     => '=Sheet1!$E$2:$E$6',
);

# Set the Excel chart style.
$chart->set_style( 37 );

# Turn off the legend.
$chart->set_legend( position => 'none' );

# Insert the chart into the worksheet.
$worksheet->insert_chart( 'G3', $chart );

$workbook->close();

__END__