pChart图表中文显示有关问题

pChart 图表中文显示问题
项目需要，图表显示数据，个人能力有限，

 /* CAT:Bar Chart */
 header("content-type:text/html; charset=utf-8");
 /* pChart library inclusions */
 include("class/pData.class.php");
 include("class/pDraw.class.php");
 include("class/pImage.class.php");

 /* Create and populate the pData object */
 $MyData = new pData();
 $MyData->addPoints(array(150,220,300,250,420,200,300,200,100),"test");
 $MyData->setAxisName(0,"Hits");
 $MyData->addPoints(array("1月","2月","3月","4月","5月","6月","7月","8月","9月"),"Months");
 $MyData->setSerieDescription("Months","Month");
 $MyData->setAbscissa("Months");

 /* Create the pChart object */
 $myPicture = new pImage(700,230,$MyData);

 /* Turn of Antialiasing */
 $myPicture->Antialias = FALSE;

 /* Add a border to the picture */
 $myPicture->drawGradientArea(0,0,700,230,DIRECTION_VERTICAL,array("StartR"=>240,"StartG"=>240,"StartB"=>240,"EndR"=>180,"EndG"=>180,"EndB"=>180,"Alpha"=>100));
 $myPicture->drawGradientArea(0,0,700,230,DIRECTION_HORIZONTAL,array("StartR"=>240,"StartG"=>240,"StartB"=>240,"EndR"=>180,"EndG"=>180,"EndB"=>180,"Alpha"=>20));
 $myPicture->drawRectangle(0,0,699,229,array("R"=>0,"G"=>0,"B"=>0));

 /* Set the default font */
 $myPicture->setFontProperties(array("FontName"=>"fonts/pf_arma_five.ttf","FontSize"=>6));

 /* Define the chart area */
 $myPicture->setGraphArea(60,40,650,200);

 /* Draw the scale */
 $scaleSettings = array("GridR"=>200,"GridG"=>200,"GridB"=>200,"DrawSubTicks"=>TRUE,"CycleBackground"=>TRUE);
 $myPicture->drawScale($scaleSettings);

 /* Write the chart legend */
 $myPicture->drawLegend(580,12,array("Style"=>LEGEND_NOBORDER,"Mode"=>LEGEND_HORIZONTAL));

 /* Turn on shadow computing */ 
 $myPicture->setShadow(TRUE,array("X"=>1,"Y"=>1,"R"=>0,"G"=>0,"B"=>0,"Alpha"=>10));

 /* Draw the chart */
 $myPicture->setShadow(TRUE,array("X"=>1,"Y"=>1,"R"=>0,"G"=>0,"B"=>0,"Alpha"=>10));
 $settings = array("Surrounding"=>-30,"InnerSurrounding"=>30);
 $myPicture->drawBarChart($settings);
 ob_clean();  //关键代码，防止出现'图像因其本身有错无法显示'的问题。
Header("Content-type: image/PNG"); 
 /* Render the picture (choose the best way) */
 $myPicture->autoOutput("examples/pictures/example.drawBarChart.simple.png");

怎么把 $MyData->addPoints(array(150,220,300,250,420,200,300,200,100),"test");的字符串test显示为中文，怎么把 $MyData->setAxisName(0,"Hits");显示中文，比如 $MyData->setAxisName(0,"套");。。
------解决方案--------------------
直接中文写上去不行吗？
------解决方案--------------------
注释掉 header("content-type:text/html; charset=utf-8");
------解决方案--------------------
是最新版的吗？
待会下一个看看
------解决方案--------------------
1、header 是不要的，因为你是以图片方式输出
2、你选用的字体是西文字体，没有汉字当然不能显示，你需要选一款中文字体
3、如果你的程序不是utf-8的，那么所有要输出的汉字都必须转成utf-8的