スクリプトを実行すると、can't locate object method "add_chart" via package "Spreadsheet::WriteExcel" at chart_column.pl line 33 のようなエラーが発生します。ここで何が問題なのか分かりますか? そして、x86_64-linux用にビルドされたv5.8.5のperlを使用しています。#!/usr/bin/perl -w
###############################################################################
#
# A simple demo of Column charts in Spreadsheet::WriteExcel.
#
# reverse('©'), December 2009, John McNamara, jmcnamara@cpan.org
#
use strict;
use Spreadsheet::WriteExcel;
my $workbook = Spreadsheet::WriteExcel->new( 'chart_column.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 1', 'Values 2' ];
my $data = [
[ 2, 3, 4, 5, 6, 7 ],
[ 1, 4, 5, 2, 1, 5 ],
[ 3, 6, 7, 5, 4, 3 ],
];
$worksheet->write( 'A1', $headings, $bold );
$worksheet->write( 'A2', $data );
###############################################################################
#
# Example 1. A minimal chart.
#
my $chart1 = $workbook->add_chart( type => 'column' );
# Add values only. Use the default categories.
$chart1->add_series( values => '=Sheet1!$B$2:$B$7' );
# Insert the chart into the main worksheet.
$worksheet->insert_chart( 'E2', $chart1 );