1Excel::Writer::XLSX::ChUasretr::CPoinet(r3i)buted Perl DEoxccuemle:n:tWartiitoenr::XLSX::Chart::Pie(3)
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NAME

6       Pie - A class for writing Excel Pie charts.
7

SYNOPSIS

9       To create a simple Excel file with a Pie chart using
10       Excel::Writer::XLSX:
11
12           #!/usr/bin/perl
13
14           use strict;
15           use warnings;
16           use Excel::Writer::XLSX;
17
18           my $workbook  = Excel::Writer::XLSX->new( 'chart.xlsx' );
19           my $worksheet = $workbook->add_worksheet();
20
21           my $chart     = $workbook->add_chart( type => 'pie' );
22
23           # Configure the chart.
24           $chart->add_series(
25               categories => '=Sheet1!$A$2:$A$7',
26               values     => '=Sheet1!$B$2:$B$7',
27           );
28
29           # Add the worksheet data the chart refers to.
30           my $data = [
31               [ 'Category', 2, 3, 4, 5, 6, 7 ],
32               [ 'Value',    1, 4, 5, 2, 1, 5 ],
33           ];
34
35           $worksheet->write( 'A1', $data );
36
37           __END__
38

DESCRIPTION

40       This module implements Pie charts for Excel::Writer::XLSX. The chart
41       object is created via the Workbook "add_chart()" method:
42
43           my $chart = $workbook->add_chart( type => 'pie' );
44
45       Once the object is created it can be configured via the following
46       methods that are common to all chart classes:
47
48           $chart->add_series();
49           $chart->set_title();
50
51       These methods are explained in detail in Excel::Writer::XLSX::Chart.
52       Class specific methods or settings, if any, are explained below.
53

Pie Chart Methods

55   set_rotation()
56       The "set_rotation()" method is used to set the rotation of the first
57       segment of a Pie/Doughnut chart. This has the effect of rotating the
58       entire chart:
59
60           $chart->set_rotation( 90 );
61
62       The angle of rotation must be "0 <= rotation <= 360".
63
64   User defined colors
65       It is possible to define chart colors for most types of
66       Excel::Writer::XLSX charts via the add_series() method. However,
67       Pie/Doughnut charts are a special case since each segment is
68       represented as a point so it is necessary to assign formatting to each
69       point in the series:
70
71           $chart->add_series(
72               values => '=Sheet1!$A$1:$A$3',
73               points => [
74                   { fill => { color => '#FF0000' } },
75                   { fill => { color => '#CC0000' } },
76                   { fill => { color => '#990000' } },
77               ],
78           );
79
80       See the main Excel::Writer::XLSX::Chart documentation for more details.
81
82       Pie charts support leader lines:
83
84           $chart->add_series(
85               name        => 'Pie sales data',
86               categories  => [ 'Sheet1', 1, 3, 0, 0 ],
87               values      => [ 'Sheet1', 1, 3, 1, 1 ],
88               data_labels => {
89                   series_name  => 1,
90                   percentage   => 1,
91                   leader_lines => 1,
92                   position     => 'outside_end'
93               },
94           );
95
96       Note: Even when leader lines are turned on they aren't automatically
97       visible in Excel or Excel::Writer::XLSX. Due to an Excel limitation (or
98       design) leader lines only appear if the data label is moved manually or
99       if the data labels are very close and need to be adjusted
100       automatically.
101
102   Unsupported Methods
103       A Pie chart doesn't have an X or Y axis so the following common chart
104       methods are ignored.
105
106           $chart->set_x_axis();
107           $chart->set_y_axis();
108

EXAMPLE

110       Here is a complete example that demonstrates most of the available
111       features when creating a chart.
112
113           #!/usr/bin/perl
114
115           use strict;
116           use warnings;
117           use Excel::Writer::XLSX;
118
119           my $workbook  = Excel::Writer::XLSX->new( 'chart_pie.xlsx' );
120           my $worksheet = $workbook->add_worksheet();
121           my $bold      = $workbook->add_format( bold => 1 );
122
123           # Add the worksheet data that the charts will refer to.
124           my $headings = [ 'Category', 'Values' ];
125           my $data = [
126               [ 'Apple', 'Cherry', 'Pecan' ],
127               [ 60,       30,       10     ],
128           ];
129
130           $worksheet->write( 'A1', $headings, $bold );
131           $worksheet->write( 'A2', $data );
132
133           # Create a new chart object. In this case an embedded chart.
134           my $chart = $workbook->add_chart( type => 'pie', embedded => 1 );
135
136           # Configure the series. Note the use of the array ref to define ranges:
137           # [ $sheetname, $row_start, $row_end, $col_start, $col_end ].
138           $chart->add_series(
139               name       => 'Pie sales data',
140               categories => [ 'Sheet1', 1, 3, 0, 0 ],
141               values     => [ 'Sheet1', 1, 3, 1, 1 ],
142           );
143
144           # Add a title.
145           $chart->set_title( name => 'Popular Pie Types' );
146
147           # Set an Excel chart style. Colors with white outline and shadow.
148           $chart->set_style( 10 );
149
150           # Insert the chart into the worksheet (with an offset).
151           $worksheet->insert_chart( 'C2', $chart, 25, 10 );
152
153           __END__
154

AUTHOR

156       John McNamara jmcnamara@cpan.org
157

159       Copyright MM-MMXX, John McNamara.
160
161       All Rights Reserved. This module is free software. It may be used,
162       redistributed and/or modified under the same terms as Perl itself.
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166perl v5.34.0                      2021-07-22Excel::Writer::XLSX::Chart::Pie(3)
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