php生成图形(Libchart)的代码分享

<?
 /*
  LIbchart图形生成类的例子
  编辑：www.jb200.com
 */
 require "./libchart/classes/libchart.php";
 class drawPic{
  var $chart;
  var $style;
  function drawPic($style="1",$width="500",$height="250"){
   $this->style=$style;
   if($style==1){
    //cylinder
    $this->chart = new VerticalBarChart($width,$height);
   }else if($style==2){
    //line
    $this->chart = new LineChart($width,$height);
   }else if($style==3){
    //Lump
    $this->chart = new PieChart($width,$height);
   }else{
    //cross
    $this->chart=new HorizontalBarChart($width,$height);
   }
  }

  function draw($obj){

   if($this->style==1||$this->style=="1"){
    //cylinder
    $dataSet = new XYDataSet() ;
    $this->chart->setTitle($obj->title);//title
    $arr=array();
    $arr=$obj->dataArray;
    foreach($arr as $key => $val){
     $dataSet->addPoint ( new Point($key,$val)) ;
    }
    $this->chart->setDataSet ( $dataSet ) ;
    $this->chart->render();
   }else if($this->style==2||$this->style=="2"){
    //line
    $this->chart->setTitle($obj->title);//title
    $arr=array();
    $arr=$obj->dataArray;
    $i=0;
    $dataSet = new XYSeriesDataSet();
    foreach($arr as $key => $val){
     $serie{$i}= new XYDataSet();
     foreach($val as $k => $v){
      $serie{$i}->addPoint(new Point($k,$v));
     }
     $dataSet->addSerie($key,$serie{$i});
     $i=$i+1;
    }
    $this->chart->setDataSet($dataSet);
    $this->chart->render();
   }else if($style==3){
    //Lump
    $dataSet = new XYDataSet() ;
    $this->chart->setTitle($obj->title);//title
    $arr=array();
    $arr=$obj->dataArray;
    foreach($arr as $key => $val){
     $dataSet->addPoint ( new Point($key."($val)",$val)) ;
    }
    $this->chart->setDataSet ( $dataSet ) ;
    $this->chart->render();
   }else{
    //cross
    $dataSet = new XYDataSet();
    $this->chart->setTitle($obj->title);//title
    $arr=array();
    $arr=$obj->dataArray;
    foreach($arr as $key => $val){
     $dataSet->addPoint ( new Point($key,$val)) ;
    }
    $this->chart->setDataSet($dataSet);
    $this->chart->render();
   }
  }

 }

 //调用示例
 class kkk{};
 $n=new drawPic("4");//it will set 1 or 2 or 3 or 4
 $k=new kkk();
 $k->dataArray=array("2000"=>"30","2001"=>"40","2002"=>"50","2003"=>"60","2004"=>"70","2005"=>"80","20020"=>"90");//style==1 or style=2 or style=4
 //$k->dataArray=array("2000"=>"30","2001"=>"40","2002"=>"50","2003"=>"60","2004"=>"70","2005"=>"80","20020"=>"90");//style==3
 //$k->dataArray=array("yi"=>array("2000"=>"30","2001"=>"40","2002"=>"50","2004"=>"60"),"er"=>array("2003"=>"60","2004"=>"70","2005"=>"80","20020"=>"90"),"san"=>array("33"=>"12","45"=>"56","89"=>"45","86"=>"49"));//style==2 and the years will show first array to block.(it will be show 2000 2001 2002 2004)
 $k->title="The Sheet title";
 $n->draw($k);
?>
 

<?php
   header("content-type:image/png"); 
   require_once('libchart/classes/libchart.php');

   $chart = new VerticalBarChart( 500 , 250 ) ; // 参数表示需要创建的图像的宽和高
   $dataSet = new XYDataSet() ; // 实例化一个 XY 轴数据对象
     // 为这个对象增加四组数据集合， Point 对象的第一个参数表示 X 轴坐标，
// 第二个表示 Y 轴坐标
   $str = '二月';

$str = mb_convert_encoding($str, "html-entities","utf-8" );
$dataSet -> addPoint ( new Point( "Jan 2005" , 273 )) ;
    $dataSet -> addPoint ( new Point( "$str" , 120 )) ;
    $dataSet -> addPoint ( new Point( "March 2005" , 442 )) ;
    $dataSet -> addPoint ( new Point( "April 2005" , 600 )) ;
     // 把这个数据集合传递给图形对象
    $chart -> setDataSet ( $dataSet ) ;
    // 设置图形的标题，并把它作为一个 png 文件渲染
    $chart -> setTitle ( "统计图" ) ;

    //$chart -> render ( "demo/generated/demo1.png" ) ;
    // 这里需要一个路径和文件名称
    //就这么简单一个像下图一样美丽的柱状图就出来了
    $chart -> render () ;
?>
 

public function Text() {
    $baseDir = dirname(__FILE__) . "/../../../";

    // Free low-res fonts based on Bitstream Vera <http://dejavu.sourceforge.net/wiki/>
   $this->fontCondensed = $baseDir . "fonts/FANGZHENGFANGSONG.ttf";
    $this->fontCondensedBold = $baseDir . "fonts/FANGZHENGFANGSONG.ttf";
   }