PHPlot PHP图形类
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PHPLOT 是一个用来创建图表的PHP图形类，需要 PHP5 的支持。PHPLot使用PHP的GD扩展来生成 PNG/GIF/JPEG 格式图片。
生成上面图形的代码如下：
#?PHPlot?Demo
#?2008-01-09?ljb
#?For?more?information?see?http://sourceforge.net/projects/phplot/
#?Load?the?PHPlot?class?library:
require_once?'phplot.php';
#?Define?the?data?array:?Label,?the?3?data?sets.
#?Year,??Features,?Bugs,?Happy?Users:
$data?=?array(
??array('2001',??60,??35,??20),
??array('2002',??65,??30,??30),
??array('2003',??70,??25,??40),
??array('2004',??72,??20,??60),
??array('2005',??75,??15,??70),
??array('2006',??77,??10,??80),
??array('2007',??80,???5,??90),
);
#?Create?a?PHPlot?object?which?will?make?a?600x400?pixel?image:
$p?=?new?PHPlot(600,?400);
#?Use?TrueType?fonts:
$p->SetDefaultTTFont('./arial.ttf');
#?Set?the?main?plot?title:
$p->SetTitle('PHPlot?Customer?Satisfaction?(estimated)');
#?Select?the?data?array?representation?and?store?the?data:
$p->SetDataType('text-data');
$p->SetDataValues($data);
#?Select?the?plot?type?-?bar?chart:
$p->SetPlotType('bars');
#?Define?the?data?range.?PHPlot?can?do?this?automatically,?but?not?as?well.
$p->SetPlotAreaWorld(0,?0,?7,?100);
#?Select?an?overall?image?background?color?and?another?color?under?the?plot:
$p->SetBackgroundColor('#ffffcc');
$p->SetDrawPlotAreaBackground(True);
$p->SetPlotBgColor('#ffffff');
#?Draw?lines?on?all?4?sides?of?the?plot:
$p->SetPlotBorderType('full');
#?Set?a?3?line?legend,?and?position?it?in?the?upper?left?corner:
$p->SetLegend(array('Features',?'Bugs',?'Happy?Users'));
$p->SetLegendWorld(0.1,?95);
#?Turn?data?labels?on,?and?all?ticks?and?tick?labels?off:
$p->SetXDataLabelPos('plotdown');
$p->SetXTickPos('none');
$p->SetXTickLabelPos('none');
$p->SetYTickPos('none');
$p->SetYTickLabelPos('none');
#?Generate?and?output?the?graph?now:
$p->DrawGraph();
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项目主页：http://phplot.sourceforge.net/
文档地址：http://phplot.sourceforge.net/phplotdocs/
下载地址：http://sourceforge.net/projects/phplot/
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