pchart是一个开源的图表生成库，主要涉及3个class：pchart.class, pdata.class, pcache.class，可生成20多种简单或复杂的图表，支持png，jpg，gif通用图片格式。数据源可以来自于database，csv，当然也可以手写。使用该程序php需要开启gd服务，先来看看pchart的工作流程：
主要分为三步：
- * 读取用于生成图表数据（数据库、文件）
- * 设计图表样式（圆角、底色等）
- * 制作标签、题目、图例并生成图表
下面看一个简单的柱状图表：
代码如下：
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<?php // standard inclusions include("pchart/pdata.class"); include("pchart/pchart.class"); // dataset definition $dataset = new pdata; //图表数据 $dataset->addpoint(array(1,4,-3,2,-3,3,2,1,0,7,4),"serie1"); $dataset->addpoint(array(3,3,-4,1,-2,2,1,0,-1,6,3),"serie2"); $dataset->addpoint(array(4,1,2,-1,-4,-2,3,2,1,2,2),"serie3"); $dataset->addallseries(); $dataset->setabsciselabelserie(); //数据图例 $dataset->setseriename("microsoft","serie1"); $dataset->setseriename("ibm","serie2"); $dataset->setseriename("google","serie3"); // initialise the graph $test = new pchart(700,230); //设置图表尺寸、样式 $test->setfontproperties("fonts/tahoma.ttf",8); $test->setgrapharea(50,30,680,200); $test->drawfilledroundedrectangle(7,7,693,223,5,240,240,240); $test->drawroundedrectangle(5,5,695,225,5,230,230,230); $test->drawgrapharea(255,255,255,true); $test->drawscale($dataset->getdata(),$dataset->getdatadescription(),scale_normal,150,150,150,true,0,2,true); $test->drawgrid(4,true,230,230,230,50); // draw the 0 line $test->setfontproperties("fonts/manksans.ttf",6); $test->drawtreshold(0,143,55,72,true,true); // draw the bar graph //柱状图要使用drawbargraph() $test->drawbargraph($dataset->getdata(),$dataset->getdatadescription(),true,80); // finish the graph //制作图例、标题、字体等属性 $test->setfontproperties("fonts/manksans.ttf",10); $test->drawlegend(596,150,$dataset->getdatadescription(),255,255,255); $test->setfontproperties("fonts/manksans.ttf",10); $test->drawtitle(50,22,"example",50,50,50,585); //生成图表 $imagefile = "example12.png"; $test->render($imagefile); echo '<img src="'.$imagefile.'">';?> |
这个是雷达效果的：
代码：
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<?php // standard inclusions include("pchart/pdata.class"); include("pchart/pchart.class"); // dataset definition $dataset = new pdata; $dataset->addpoint(array("memory","disk","network","slots","cpu"),"label"); $dataset->addpoint(array(6,4,7,4,5),"serie1"); $dataset->addpoint(array(2,3,5,2,4),"serie2"); $dataset->addserie("serie1"); $dataset->addserie("serie2"); $dataset->setabsciselabelserie("label"); $dataset->setseriename("reference","serie1"); $dataset->setseriename("tested computer","serie2"); // initialise the graph $test = new pchart(400,400); $test->setfontproperties("fonts/tahoma.ttf",8); $test->drawfilledroundedrectangle(7,7,393,393,5,240,240,240); $test->drawroundedrectangle(5,5,395,395,5,230,230,230); $test->setgrapharea(30,30,370,370); $test->drawfilledroundedrectangle(30,30,370,370,5,255,255,255); $test->drawroundedrectangle(30,30,370,370,5,220,220,220); // draw the radar graph //要使用drawradaraxis()生成雷达效果 $test->drawradaraxis($dataset->getdata(),$dataset->getdatadescription(),true,20,120,120,120,230,230,230); $test->drawfilledradar($dataset->getdata(),$dataset->getdatadescription(),50,20); // finish the graph $test->drawlegend(15,15,$dataset->getdatadescription(),255,255,255); $test->setfontproperties("fonts/tahoma.ttf",10); $test->drawtitle(0,22,"example",50,50,50,400); $imagefile = "example8.png"; $test->render($imagefile); echo '<img src="'.$imagefile.'">';?> |
再看几个其他的效果
1，饼图：
2, 双座标曲线图：
3, 层叠柱状图：
4, 多图表：
图表的种类已经相当丰富了，具体图表设置请参考
http://pchart.sourceforge.net/documentation.php?topic=pchart
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原文链接：https://www.cnblogs.com/gnielee/archive/2009/08/06/1540367.html
