Question

我有绘制图表的cgi脚本。这是代码：

#!/usr/bin/perl -w

use CGI ':standard';
use GD::Graph::bars;
use strict;

my @data = (["Jan", "Feb", "Mar", "Apr", "May", "Jun", 
             "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
            [23, 5, 2, 20, 11, 33, 7, 31, 77, 18, 65, 52]);

my $mygraph = GD::Graph::bars->new(500, 300);
$mygraph->set(
    x_label => 'Month',
    y_label => 'Number of Hits',
    title   => 'Number of Hits in Each Month in 2002',
    dclrs   => ['cyan']
) or warn $mygraph->error;

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

print "Content-type: image/png\n\n";
print $myimage->png;

所有列都是青色。所以......

您是否有任何想法如何将图像放在列而不是颜色？

我在网上搜索了它，但没有找到类似的东西。我想只使用GD.pm而不使用其他模块，如ImageMagick。

Answer 1

我不知道。通过指定徽标选项，您可以为整个图形提供背景图像。

$mygraph->set(
    x_label => 'Month',
    y_label => 'Number of Hits',
    title   => 'Number of Hits in Each Month in 2002',
    dclrs   => ['cyan'],
    logo => 'mydog.png',
) or warn $mygraph->error;

但我认为你不能只在列中放置图像。

在图表的列的背景图象

1 个答案: