登录  /  注册

解析PHP生成图表pChart的示例

coldplay.xixi
发布: 2020-08-04 15:45:18
转载
3021人浏览过

解析PHP生成图表pChart的示例

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:

相关学习推荐:PHP编程从入门到精通

主要分为三步:

  1. * 读取用于生成图表数据(数据库、文件)
  2. * 设计图表样式(圆角、底色等)
  3. * 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:

<?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 &#39;<img  src="&#39;.$imageFile.&#39;" alt="解析PHP生成图表pChart的示例" >&#39;;
?>
登录后复制

这个是雷达效果的:

代码:

<?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 &#39;<img  src="&#39;.$imageFile.&#39;" alt="解析PHP生成图表pChart的示例" >&#39;;
?>
登录后复制

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

::源代码下载:::

http://xiazai.jb51.net/202007/yuanma/pChart_jb51.rar

以上就是解析PHP生成图表pChart的示例的详细内容,更多请关注php中文网其它相关文章!

智能AI问答
PHP中文网智能助手能迅速回答你的编程问题,提供实时的代码和解决方案,帮助你解决各种难题。不仅如此,它还能提供编程资源和学习指导,帮助你快速提升编程技能。无论你是初学者还是专业人士,AI智能助手都能成为你的可靠助手,助力你在编程领域取得更大的成就。
相关标签:
来源:jb51网
本文内容由网友自发贡献,版权归原作者所有,本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容,请联系admin@php.cn
最新问题
热门教程
更多>
最新下载
更多>
网站特效
网站源码
网站素材
前端模板
关于我们 免责申明 意见反馈 讲师合作 广告合作 最新更新
php中文网:公益在线php培训,帮助PHP学习者快速成长!
关注服务号 技术交流群
PHP中文网订阅号
每天精选资源文章推送
PHP中文网APP
随时随地碎片化学习
PHP中文网抖音号
发现有趣的

Copyright 2014-2024 https://www.php.cn/ All Rights Reserved | php.cn | 湘ICP备2023035733号