# phpman > perldoc > Spreadsheet::WriteExcel::Chart::Pie

## NAME
    Pie - A writer class for Excel Pie charts.

## SYNOPSIS
    To create a simple Excel file with a Pie chart using [Spreadsheet::WriteExcel](https://www.chedong.com/phpMan.php/perldoc/Spreadsheet%3A%3AWriteExcel/markdown):

        #!/usr/bin/perl -w

        use strict;
        use [Spreadsheet::WriteExcel](https://www.chedong.com/phpMan.php/perldoc/Spreadsheet%3A%3AWriteExcel/markdown);

        my $workbook  = [Spreadsheet::WriteExcel](https://www.chedong.com/phpMan.php/perldoc/Spreadsheet%3A%3AWriteExcel/markdown)->new( 'chart.xls' );
        my $worksheet = $workbook->add_worksheet();

        my $chart     = $workbook->add_chart( type => 'pie' );

        # Configure the chart.
        $chart->add_series(
            categories => '=Sheet1!$A$2:$A$7',
            values     => '=Sheet1!$B$2:$B$7',
        );

        # Add the worksheet data the chart refers to.
        my $data = [
            [ 'Category', 2, 3, 4, 5, 6, 7 ],
            [ 'Value',    1, 4, 5, 2, 1, 5 ],
        ];

        $worksheet->write( 'A1', $data );

        __END__

## DESCRIPTION
    This module implements Pie charts for [Spreadsheet::WriteExcel](https://www.chedong.com/phpMan.php/perldoc/Spreadsheet%3A%3AWriteExcel/markdown). The chart object is created via
    the Workbook "add_chart()" method:

        my $chart = $workbook->add_chart( type => 'pie' );

    Once the object is created it can be configured via the following methods that are common to all
    chart classes:

        $chart->add_series();
        $chart->set_title();

    These methods are explained in detail in [Spreadsheet::WriteExcel::Chart](https://www.chedong.com/phpMan.php/perldoc/Spreadsheet%3A%3AWriteExcel%3A%3AChart/markdown). Class specific methods
    or settings, if any, are explained below.

## Pie Chart Methods
    There aren't currently any pie chart specific methods. See the TODO section of
    [Spreadsheet::WriteExcel::Chart](https://www.chedong.com/phpMan.php/perldoc/Spreadsheet%3A%3AWriteExcel%3A%3AChart/markdown).

    A Pie chart doesn't have an X or Y axis so the following common chart methods are ignored.

        $chart->set_x_axis();
        $chart->set_y_axis();

## EXAMPLE
    Here is a complete example that demonstrates most of the available features when creating a
    chart.

        #!/usr/bin/perl -w

        use strict;
        use [Spreadsheet::WriteExcel](https://www.chedong.com/phpMan.php/perldoc/Spreadsheet%3A%3AWriteExcel/markdown);

        my $workbook  = [Spreadsheet::WriteExcel](https://www.chedong.com/phpMan.php/perldoc/Spreadsheet%3A%3AWriteExcel/markdown)->new( 'chart_pie.xls' );
        my $worksheet = $workbook->add_worksheet();
        my $bold      = $workbook->add_format( bold => 1 );

        # Add the worksheet data that the charts will refer to.
        my $headings = [ 'Category', 'Values' ];
        my $data = [
            [ 'Apple', 'Cherry', 'Pecan' ],
            [ 60,       30,       10     ],
        ];

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

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

        # Configure the series.
        $chart->add_series(
            name       => 'Pie sales data',
            categories => '=Sheet1!$A$2:$A$4',
            values     => '=Sheet1!$B$2:$B$4',
        );

        # Add a title.
        $chart->set_title( name => 'Popular Pie Types' );


        # Insert the chart into the worksheet (with an offset).
        $worksheet->insert_chart( 'C2', $chart, 25, 10 );

        __END__

## AUTHOR
    John McNamara <jmcnamara@cpan.org>

## COPYRIGHT
    Copyright MM-MMX, John McNamara.

    All Rights Reserved. This module is free software. It may be used, redistributed and/or modified
    under the same terms as Perl itself.