php使用Jpgraph绘制柱形图的方法

<?php 
include ("src/jpgraph.php"); 
include ("src/jpgraph_bar.php"); 
$data = array(19,23,34,38,45,67,71,78,85,87,90,96); //定义数组
$graph = new graph(400,300); //创建新的graph对象 
$graph->setscale("textlin");                 
$graph->setshadow(); //设置阴影 
$graph->img->setmargin(40,30,20,40); //设置边距 
$barplot = new barplot($data); //创建barplot对象 
$barplot->setfillcolor('blue'); //设置颜色 
$barplot->value->show(); //设置显示数字 
$graph->add($barplot); //将柱形图添加到图像中 
$graph->title->set("年度收支表"); //设置标题和x-y轴标题
$graph->xaxis->title->set("月份"); 
$graph->yaxis->title->set("总金额（兆美元）"); 
$graph->title->setfont(ff_simsun,fs_bold); //设置字体 
$graph->yaxis->title->setfont(ff_simsun,fs_bold); 
$graph->xaxis->title->setfont(ff_simsun,fs_bold); 
$graph->stroke(); 
?>