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在编译用于制作图形并将其保存到 png 文件的 perl 脚本时,我收到以下错误 - 无法通过包“GD::Graph::bars”定位对象方法“png”(可能您忘记加载“GD ::Graph::bars”?)

知道如何解决吗?

以下是我的代码 -

use CGI ':standard';
use GD::Graph::bars;
unlink("abc.png");
open (PIC, ">abc.png") or die "an error occurred: $!";
binmode PIC;

my @data = (["Jan", "Feb"],[23, 5]);

my $mygraph = GD::Graph::bars->new(500, 500);

$mygraph->set(
x_label     => 'Month',
y_label     => 'Number of Hits',
title       => 'Number of Hits in Each Month in 2002',) or warn $mygraph->error;

my $myimage = $mygraph->plot(\@data) or die $mygraph->error;

print PIC $mygraph->png;
close(PIC);

谢谢

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1 回答 1

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得到错误 - 打印 PIC $mygraph ->png; 我需要使用 print PIC $myimage ->png;

于 2012-11-05T09:42:18.187 回答