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#!/usr/bin/perl
#######################################################################
#
# A demo of a Pareto chart in Excel::Writer::XLSX.
#
# Copyright 2000-2023, John McNamara, jmcnamara@cpan.org
#
use strict;
use warnings;
use Excel::Writer::XLSX;
my $workbook = Excel::Writer::XLSX->new( 'chart_pareto.xlsx' );
my $worksheet = $workbook->add_worksheet();
# Formats used in the workbook.
my $bold = $workbook->add_format( bold => 1 );
my $percent_format = $workbook->add_format( num_format => '0.0%' );
# Widen the columns for visibility.
$worksheet->set_column( 'A:A', 15 );
$worksheet->set_column( 'B:C', 10 );
# Add the worksheet data that the charts will refer to.
my $headings = [ 'Reason', 'Number', 'Percentage' ];
my $reasons = [
'Traffic', 'Child care', 'Public Transport', 'Weather',
'Overslept', 'Emergency',
];
my $numbers = [ 60, 40, 20, 15, 10, 5 ];
my $percents = [ 0.44, 0.667, 0.8, 0.9, 0.967, 1 ];
$worksheet->write_row( 'A1', $headings, $bold );
$worksheet->write_col( 'A2', $reasons );
$worksheet->write_col( 'B2', $numbers );
$worksheet->write_col( 'C2', $percents, $percent_format );
# Create a new column chart. This will be the primary chart.
my $column_chart = $workbook->add_chart( type => 'column', embedded => 1 );
# Add a series.
$column_chart->add_series(
categories => '=Sheet1!$A$2:$A$7',
values => '=Sheet1!$B$2:$B$7',
);
# Add a chart title.
$column_chart->set_title( name => 'Reasons for lateness' );
# Turn off the chart legend.
$column_chart->set_legend( position => 'none' );
# Set the title and scale of the Y axes. Note, the secondary axis is set from
# the primary chart.
$column_chart->set_y_axis(
name => 'Respondents (number)',
min => 0,
max => 120
);
$column_chart->set_y2_axis( max => 1 );
# Create a new line chart. This will be the secondary chart.
my $line_chart = $workbook->add_chart( type => 'line', embedded => 1 );
# Add a series, on the secondary axis.
$line_chart->add_series(
categories => '=Sheet1!$A$2:$A$7',
values => '=Sheet1!$C$2:$C$7',
marker => { type => 'automatic' },
y2_axis => 1,
);
# Combine the charts.
$column_chart->combine( $line_chart );
# Insert the chart into the worksheet.
$worksheet->insert_chart( 'F2', $column_chart );
$workbook->close();
__END__
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