php - pChart 输出图像的问题。怎么了？

Question

我在我的 php 页面中显示 3DPie 示例 pChart 时遇到问题，无论输出 (Stroke()、autoOutput()、render()) 是什么，它都不会呈现给浏览器，但示例在示例中有效文件夹。

我的问题是：为什么它不会呈现给浏览器？我如何解决它？（它不是包含，它们适用于基本语法教程）

include("code libraries/pChart2.1.3/class/pDraw.class.php");
include("code libraries/pChart2.1.3/class/pImage.class.php");
include("code libraries/pChart2.1.3/class/pData.class.php");

 /* Create and populate the pData object */
 $MyData = new pData();   
 $MyData->addPoints(array(50,2,3,4,7,10,25,48,41,10),"ScoreA");  
 $MyData->setSerieDescription("ScoreA","Application A");

 /* Define the absissa serie */
 $MyData->addPoints(array("A0","B1","C2","D3","E4","F5","G6","H7","I8","J9"),"Labels");
 $MyData->setAbscissa("Labels");

 /* Create the pChart object */
 $myPicture = new pImage(300,260,$MyData);

 /* Draw a solid background */
 $Settings = array("R"=>170, "G"=>183, "B"=>87, "Dash"=>1, "DashR"=>190, "DashG"=>203, "DashB"=>107);
 $myPicture->drawFilledRectangle(0,0,300,300,$Settings);

 /* Overlay with a gradient */
 $Settings = array("StartR"=>219, "StartG"=>231, "StartB"=>139, "EndR"=>1, "EndG"=>138, "EndB"=>68, "Alpha"=>50);
 $myPicture->drawGradientArea(0,0,300,260,DIRECTION_VERTICAL,$Settings);
 $myPicture->drawGradientArea(0,0,300,20,DIRECTION_VERTICAL,array("StartR"=>0,"StartG"=>0,"StartB"=>0,"EndR"=>50,"EndG"=>50,"EndB"=>50,"Alpha"=>100));

 /* Add a border to the picture */
 $myPicture->drawRectangle(0,0,299,259,array("R"=>0,"G"=>0,"B"=>0));

 /* Write the picture title */ 
 $myPicture->setFontProperties(array("FontName"=>"code libraries/pChart2.1.3/fonts/Silkscreen.ttf","FontSize"=>6));
 $myPicture->drawText(10,13,"pPie - Draw 2D pie charts",array("R"=>255,"G"=>255,"B"=>255));

 /* Set the default font properties */ 
 $myPicture->setFontProperties(array("FontName"=>"code libraries/pChart2.1.3/fonts/Forgotte.ttf","FontSize"=>10,"R"=>80,"G"=>80,"B"=>80));

 /* Create the pPie object */ 
 $PieChart = new pPie($myPicture,$MyData);

 /* Draw an AA pie chart */ 
 $PieChart->draw3DPie(160,140,array("Radius"=>70,"DrawLabels"=>TRUE,"LabelStacked"=>TRUE,"Border"=>TRUE));

 /* Write the legend box */ 
 $myPicture->setShadow(FALSE);
 $PieChart->drawPieLegend(15,40,array("Alpha"=>20));

 /* Render the picture (choose the best way) */
 $myPicture->autoOutput("vgraph.png");

Answer 1

可能的错误

A. 你没有包含pPie.class.php在你的脚本中

B. 可能的错误路径

C. 可能错误的字体位置

尝试

require("lib/pchart/class/pData.class.php");
require("lib/pchart/class/pDraw.class.php");
require("lib/pchart/class/pImage.class.php");
require("lib/pchart/class/pPie.class.php");


$font1 = "lib/pchart/fonts/pf_arma_five.ttf" ;
$font2 = "lib/pchart/fonts/pf_arma_five.ttf" ;

 $MyData = new pData();   
 $MyData->addPoints(array(50,2,3,4,7,10,25,48,41,10),"ScoreA");  
 $MyData->setSerieDescription("ScoreA","Application A");

 /* Define the absissa serie */
 $MyData->addPoints(array("A0","B1","C2","D3","E4","F5","G6","H7","I8","J9"),"Labels");
 $MyData->setAbscissa("Labels");

 /* Create the pChart object */
 $myPicture = new pImage(300,260,$MyData);

 /* Draw a solid background */
 $Settings = array("R"=>170, "G"=>183, "B"=>87, "Dash"=>1, "DashR"=>190, "DashG"=>203, "DashB"=>107);
 $myPicture->drawFilledRectangle(0,0,300,300,$Settings);

 /* Overlay with a gradient */
 $Settings = array("StartR"=>219, "StartG"=>231, "StartB"=>139, "EndR"=>1, "EndG"=>138, "EndB"=>68, "Alpha"=>50);
 $myPicture->drawGradientArea(0,0,300,260,DIRECTION_VERTICAL,$Settings);
 $myPicture->drawGradientArea(0,0,300,20,DIRECTION_VERTICAL,array("StartR"=>0,"StartG"=>0,"StartB"=>0,"EndR"=>50,"EndG"=>50,"EndB"=>50,"Alpha"=>100));

 /* Add a border to the picture */
 $myPicture->drawRectangle(0,0,299,259,array("R"=>0,"G"=>0,"B"=>0));

 /* Write the picture title */ 
 $myPicture->setFontProperties(array("FontName"=>$font1,"FontSize"=>6));
 $myPicture->drawText(10,13,"pPie - Draw 2D pie charts",array("R"=>255,"G"=>255,"B"=>255));

 /* Set the default font properties */ 
 $myPicture->setFontProperties(array("FontName"=>$font2,"FontSize"=>10,"R"=>80,"G"=>80,"B"=>80));

 /* Create the pPie object */ 
 $PieChart = new pPie($myPicture,$MyData);

 /* Draw an AA pie chart */ 
 $PieChart->draw3DPie(160,140,array("Radius"=>70,"DrawLabels"=>TRUE,"LabelStacked"=>TRUE,"Border"=>TRUE));

 /* Write the legend box */ 
 $myPicture->setShadow(FALSE);
 $PieChart->drawPieLegend(15,40,array("Alpha"=>20));

 /* Render the picture (choose the best way) */
 $myPicture->autoOutput("vgraph.png");

结果