php图形jpgraph操作实例分析

<?php
include ("src/jpgraph.php");
include("src/jpgraph_bar.php");
include ("src/jpgraph_line.php");
//设置显示的数据数组；
//调用类库
//设置图像的大小
$graph = new graph(400,200,"auto");
$graph->setscale("textlin");
//设置图形的边距
$graph->img->setmargin(40,180,40,40);
//设置图形的背景图片，填充方式有：bgimg_fillplot, bgimg_fillframe, bgimg_copy
$graph->setbackgroundimage("abc.jpg",bgimg_fillplot);
$graph->img->setangle(45); //设置图形在图像中的角度
//设置背景图片的对比度，must be between -1 <= x <= 1, (0,0)=original image
$graph->adjbackgroundimage(0,0);
//设置投影；
//$graph->setshadow();
//设置标题
$graph->title->set("test image");
//设置标题字体样式
$graph->title->setfont(ff_font1,fs_bold);
//设置标题的边距
$graph->title->setmargin(3);
//设置图列的位置
$graph->legend->pos(0.05,0.5,"right","center");
//设置图列的投影，颜色
$graph->legend->setshadow('darkgray@0.1');
$graph->legend->setfillcolor('lightblue@0.3');
//设置x轴的标记
$graph->xaxis->setticklabels($label_x);
//设置x轴的显示值的角度;
$graph->xaxis->setlabelangle(30);
//设置x轴标题和字体颜色
$graph->xaxis->title->set('year 2006');
$graph->xaxis->title->setfont(ff_font1,fs_bold);
$graph->xaxis->title->setcolor('white');
//设置x轴的字体和颜色
$graph->xaxis->setfont(ff_font1,fs_bold);
$graph->xaxis->setcolor('yellow');
//设置y轴的字体和颜色
$graph->yaxis->setfont(ff_font1,fs_bold);
$graph->yaxis->setcolor('yellow');
//设置是否显示格子。默认为显示；
//$graph->ygrid->show(false);
//设置格子的颜色和粗细。值越小，格子越粗。
$graph->ygrid->setcolor('yellow@0.5');
//设置y轴更优美一些
$graph->yaxis->scale->setgrace(20);
//设置图列的数据
$bplot1 = new barplot($datay1);
$bplot2 = new barplot($datay2);
//设置图列的填充颜色
$bplot1->setfillcolor('orange@0.4');
$bplot2->setfillcolor('brown@0.4');
//设置值的格式
$bplot1->value->setformat('%d');
//设置图列标签
$bplot1->setlegend('label 1');
$bplot2->setlegend('label 2');
//设置图列在图中的阴影
$bplot1->setshadow('black@0.4');
$bplot2->setshadow('black@0.4');
//生成图列
$gbarplot = new groupbarplot(array($bplot1,$bplot2));
$gbarplot->setwidth(0.9);
$graph->add($gbarplot);
//生成图形
$graph->stroke();
//上面所说的时在生成柱形图，当生成线性图时用下面的方法
$p1 = new lineplot($datay);
$p1->mark->settype(mark_filledcircle);
$p1->mark->setfillcolor("red");
$p1->mark->setwidth(4);
$p1->setcolor("blue");
$p1->setcenter();
$p1->setlegend("triumph tiger -98");
$graph->add($p1);
$p2 = new lineplot($data2y);
$p2->mark->settype(mark_star);
$p2->mark->setfillcolor("red");
$p2->mark->setwidth(4);
$p2->setcolor("red");
$p2->setcenter();
$p2->setlegend("new tiger -99");
$graph->add($p2);
// style can also be specified as setstyle([1|2|3|4]) or
// setstyle("solid"|"dotted"|"dashed"|"lobgdashed")
$lineplot->setstyle("dashed");//设置线的样式
$graph->yaxis->scale->setgrace(20); //设置y轴更优美一些
?>

if($tag == 1)
{
$graph = new graph(600,400,"auto");
$graph->setscale("textlin");
$graph->setmargincolor('lightblue');
$graph->setshadow();
$graph->setmargin(30,100,30,60);
//设置标题;
$graph->title->set("文章分类汇总");
$graph->title->setmargin(3);
$graph->title->setfont(ff_simsun,fs_bold);
$graph->title->setcolor('black@0.5');
$graph->yaxis->title->setfont(ff_simsun,fs_bold);
$graph->xaxis->title->setfont(ff_simsun,fs_bold);
$graph->xaxis->setfont(ff_simsun,fs_normal);
$graph->xaxis->setcolor('darkblue','black');
$graph->xaxis->setticklabels($name);
$graph->xaxis->setlabelangle(30);
$bplot = new barplot($article_num);
$bplot->setfillcolor("orange");
$bplot->value->setformat('%d');
$bplot->setshadow('darkgray');
$bplot->value->show();
$graph->legend->setfont(ff_simsun,fs_bold);
$bplot->setlegend("文章数");
$graph->add($bplot);
$graph->stroke();
}
else
{
$graph1 = new piegraph(600,400,"auto");
$graph1->setscale("textlin");
$graph1->setshadow();
$graph1->title->setfont(ff_simsun,fs_bold);
$graph1->title->set("用户文章饼形图");
$graph1->setmargin(30,100,30,60);
$p1 = new pieplot3d($article_num);
$p1->setangle(80);
$p1->setsize(0.5);
$p1->setshadow();
$p1->explodeslice(2);
$p1->setcenter(0.4);
$graph1->legend->setfont(ff_simsun,fs_normal);
$graph1->legend->setshadow();
$p1->setlegends($name);
$graph1->add($p1);
$graph1->stroke();
}
//生成本地图片
$graph->stroke("路径/文件名.png");