CI中使用pChart绘制图表,已测通过

因为一个codeigniter开发的项目上要用到图表。FusionChart是flash技术，在某些情况下可能造成无法使用(如ipad)。因此不禁想起了之前用Pchart做的图表项目。
但是毕竟是在CI里，有时候为了吻合框架的特性，不得不去迁就而修改自己的代码。
最初我的想法是把Pchart的类文件放在libraries文件里，然后在controllers控制器里调用，可以总是出现各种错误。尝试了很多次都是失败，难道在CI里用Pchart这么难？！！！
于是去百度+谷歌上去找相关的资料。找到了N多篇相同的标题为“在CI中使用pChart库”这类的文章，并且内容都95%惊人的相似。看来世界的确是大同了，思想都一样了(不太喜欢贴别人文章不表明转载的，人家博主写篇文章多费劲啊，你这得了便宜还卖乖，粘贴下成自己的了。).
好吧，看下思路，大致是在libraries里多创建一个类，来调用Pchart的类，进而达到使用目的。不知道大伙有没有测试，不过我这边测试的时候总有问题，于是心里很着急，又尝试了很多次，还是失败。于是就想自己写算了。不过还是运用了网络上文章的思路。即把Pchart类包放置于libraries下。但是调用类中的方法确实自己运用之前非CI框架下的方法。
目录架构类似于这样：
--demoweb
  --application
    --....
    --libraries
      --pChart
--pChart的众类文件
      --Mychart.php
    --...
  --system

  个人是把字体都和Pchart的类文件都放在pChart这个目录里的。等下看代码的时候大家就会注意到了。
  下面贴出来Mychart.php(即调用的pchart的类文件)，以及控制器里方法的测试示例代码：

Mychart.php示例代码：

 

 <?php  if (!defined('BASEPATH')) exit('No direct script access allowed'); /*** FOR:调用pchart类绘制图表*  @author cheng.yafei*  @version 1.0**/class Mychart {  /*** FOR:画图，立体饼图*  @param $dataArray 详细票数数组*  @param $reportArr 详细票数对应选项数组**/function draw3DPieImage($dataArray, $lableArray){  include(dirname(__FILE__)."/pChart/pData.class");  include(dirname(__FILE__)."/pChart/pChart.class");   $datanum = $dataArray;  $dataname = $lableArray;    // Dataset definition   $DataSet = new pData;  $DataSet->AddPoint($datanum,"Serie1");  $DataSet->AddPoint($dataname,"Serie2");  $DataSet->AddAllSeries();  $DataSet->SetAbsciseLabelSerie("Serie2");    $Test = new pChart(420,220);  $Test->drawFilledRoundedRectangle(7,7,415,213,5,240,240,240);//灰色圆角背景  $Test->drawRoundedRectangle(5,5,417,215,5,230,230,230);//灰色圆角框   // Draw the pie chart  $Test->setFontProperties(dirname(__FILE__)."/pChart/yahei.ttf",8);  $Test->drawPieGraph($DataSet->GetData(),$DataSet->GetDataDescription(),150,90,110,PIE_PERCENTAGE,TRUE,50,20,5);  $Test->drawPieLegend(310,15,$DataSet->GetData(),$DataSet->GetDataDescription(),250,250,250);  $totalStr = '(共'.array_sum($datanum).'票)';  $Test->drawTitle(20,20,$totalStr,50,50,50,380);//标题；drawTitle(20,20,参数名,50,50,50,380)   20左边距，    $rand = rand(100,300);  $image_name = $rand.'_3dpie.png';  $image_file_name = dirname(dirname(dirname(__FILE__))).'/actpic/'.$image_name;     $Test->Render($image_file_name);//  header("content-type:text/html;charset=utf-8;");  echo dirname(dirname(dirname(__FILE__))).'/actpic'."<br>";   echo "<h3>饼图:</h3><img src='http://localhost/repaction/actpic/".$image_name."'><br>";}//end function draw3DPieImage 立体饼图 /********************************   FOR:画图，分离的饼图*  @param $dataArray 详细票数数组*  @param $reportArr 详细票数对应选项数组********************************/function drawDepartPieImage($dataArray, $lableArray){     include(dirname(__FILE__)."/pChart/pData.class");    include(dirname(__FILE__)."/pChart/pChart.class");     $datanum = $dataArray;   $dataname = $lableArray;      // Dataset definition    $DataSet = new pData;   $DataSet->AddPoint($datanum,"Serie1");//投票数字   $DataSet->AddPoint($dataname,"Serie2");//对应文本   $DataSet->AddAllSeries();   $DataSet->SetAbsciseLabelSerie("Serie2");     // Initialise the graph   $Test = new pChart(370,220);//(长，宽)画布长宽   $Test->drawFilledRoundedRectangle(7,7,353,213,5,240,240,240);//灰色圆角背景   $Test->drawRoundedRectangle(5,5,355,215,5,230,230,230);//灰色圆角框   // Draw the pie chart   $Test->setFontProperties(dirname(__FILE__)."/pChart/yahei.ttf",8);   $Test->AntialiasQuality = 0;   $Test->drawFlatPieGraph($DataSet->GetData(),$DataSet->GetDataDescription(),120,100,60,PIE_PERCENTAGE,10);//画饼图   $Test->drawPieLegend(230,15,$DataSet->GetData(),$DataSet->GetDataDescription(),250,250,250);//画选项图   $totalStr = '(共'.array_sum($datanum).'票)';   $Test->drawTitle(20,20,$totalStr,50,50,50,380);//标题；drawTitle(20,20,参数名,50,50,50,380)   20左边距，        $rand = rand(100,300);   $image_name = $rand.'_departpie.png';   $image_file_name = dirname(dirname(dirname(__FILE__))).'/actpic/'.$image_name;       $Test->Render($image_file_name);      echo "<h3>离散饼图:</h3><img src='http://localhost/repaction/actpic/".$image_name."'><br>";}// end drawDepartPieImage/********************************  FOR:画图，柱状图*  @param $dataArray 详细票数数组*  @param $reportArr 详细票数对应选项数组********************************/function drawBarImage($dataArray, $lableArray){   include(dirname(__FILE__)."/pChart/pData.class");    include(dirname(__FILE__)."/pChart/pChart.class");     // Dataset definition       $DataSet = new pData;   foreach($dataArray as $k=>$v){   $DataSet->AddPoint($v, "Serie".$k);   $DataSet->SetSerieName($lableArray[$k], "Serie".$k);   }   $DataSet->AddAllSeries();   $DataSet->SetAbsciseLabelSerie();     // Initialise the graph   $Test = new pChart(700,230);   $Test->setFontProperties(dirname(__FILE__)."/pChart/yahei.ttf",8);   $Test->setGraphArea(50,30,550,200);   $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(dirname(__FILE__)."/pChart/yahei.ttf",6);   $Test->drawTreshold(0,143,55,72,TRUE,TRUE);     // Draw the bar graph   $Test->drawBarGraph($DataSet->GetData(),$DataSet->GetDataDescription(),TRUE);     // Finish the graph   $Test->setFontProperties(dirname(__FILE__)."/pChart/yahei.ttf",8);//   $Test->drawLegend(596,150,$DataSet->GetDataDescription(),255,255,255);   $Test->drawLegend(580,30,$DataSet->GetDataDescription(),255,255,255);//(左边距，上边距，描述....)   $Test->setFontProperties(dirname(__FILE__)."/pChart/yahei.ttf",10);   $Test->drawTitle(50,22,"投票",50,50,50,585);          $rand = rand(100,300);   $image_name = $rand.'_zhuzhuang.png';   $image_file_name = dirname(dirname(dirname(__FILE__))).'/actpic/'.$image_name;       $Test->Render($image_file_name);      echo "<h3>离散饼图:</h3><img src='http://localhost/repaction/actpic/".$image_name."'><br>";       }//end function drawBarImage 柱状图 }//END class

然后再在控制器的方法里调用这个类使用：

 

 

  function test(){     $this->load->library('mychart'); //载入pChart库      $dataArray = array('54','95','158','241','19'); $lableArray = array('成龙','施瓦辛格','龙格尔','史泰龙','李连杰');  $this->mychart->draw3DPieImage($dataArray,$lableArray);    }//end function  function test2(){     $this->load->library('mychart'); //载入pChart库      $dataArray = array('555','95','158','241','19'); $lableArray = array('黄家驹','平克弗洛伊德','谭咏麟','张学友','刘德华');  $this->mychart->drawDepartPieImage($dataArray,$lableArray);    }//end function function test3(){     $this->load->library('mychart'); //载入pChart库      $dataArray = array('369','95','158','241','19'); $lableArray = array('黄家驹','平克弗洛伊德','谭咏麟','张学友','刘德华');  $this->mychart->drawBarImage($dataArray,$lableArray);    }//end function  

测试代码，稍显凌乱。需要的可以测试下。知识就是共享的。请注意使用的时候，一定注意写对调用字体文件的路径。