学习php jpgraph教程

首先包含进来jpgraph的类库：

include ("../jpgraph.php");

include("../jpgraph_bar.php");

include ("../jpgraph_line.php");

设置显示的数据数组；

调用类库

//设置图像的大小

$graph = new Graph(400,200,"auto"); 

$graph->SetScale("textlin");

//设置图形的边距

$graph->img->SetMargin(40,180,40,40);     

//设置图形的背景图片，填充方式有：BGIMG_FILLPLOT, BGIMG_FILLFRAME, BGIMG_COPY

$graph->SetBackgroundImage("abc.jpg",BGIMG_FILLPLOT);

$graph->img->SetAngle(45);  //设置图形在图像中的角度

//设置背景图片的对比度，must be between -1 <= x <= 1, (0,0)=original image

$graph->AdjBackgroundImage(0,0);

//设置投影；

//$graph->SetShadow();

//设置标题

$graph->title->Set("test image");

//设置标题字体样式

$graph->title->SetFont(FF_FONT1,FS_BOLD);

//设置标题的边距

$graph->title->SetMargin(3);

//设置图列的位置

$graph->legend->Pos(0.05,0.5,"right","center");

//设置图列的投影，颜色

$graph->legend->SetShadow('darkgray@0.1');

$graph->legend->SetFillColor('lightblue@0.3');

//设置x轴的标记

$graph->xaxis->SetTickLabels($label_x);

//设置X轴的显示值的角度;

$graph->xaxis->SetLabelAngle(30);

//设置x轴标题和字体颜色

$graph->xaxis->title->Set('Year 2006');

$graph->xaxis->title->SetFont(FF_FONT1,FS_BOLD);

$graph->xaxis->title->SetColor('white');

//设置x轴的字体和颜色

$graph->xaxis->SetFont(FF_FONT1,FS_BOLD);

$graph->xaxis->SetColor('yellow');

//设置y轴的字体和颜色

$graph->yaxis->SetFont(FF_FONT1,FS_BOLD);

$graph->yaxis->SetColor('yellow');

//设置是否显示格子。默认为显示；

//$graph->ygrid->Show(false);

//设置格子的颜色和粗细。值越小，格子越粗。

$graph->ygrid->SetColor('yellow@0.5');

//设置y轴更优美一些

$graph->yaxis->scale->SetGrace(20);  

 

//设置图列的数据

$bplot1 = new BarPlot($datay1);

$bplot2 = new BarPlot($datay2);

//设置图列的填充颜色

$bplot1->SetFillColor('orange@0.4');

$bplot2->SetFillColor('brown@0.4');

设置值的格式

$bplot1->value->SetFormat('%d');

//设置图列标签

$bplot1->SetLegend('Label 1');

$bplot2->SetLegend('Label 2');

//设置图列在图中的阴影

$bplot1->SetShadow('black@0.4');

$bplot2->SetShadow('black@0.4');

//生成图列

$gbarplot = new GroupBarPlot(array($bplot1,$bplot2));

$gbarplot->SetWidth(0.9);

$graph->Add($gbarplot);

//生成图形

$graph->Stroke();

//上面所说的时在生成柱形图，当生成线性图时用下面的方法

$p1 = new LinePlot($datay);

$p1->mark->SetType(MARK_FILLEDCIRCLE);

$p1->mark->SetFillColor("red");

$p1->mark->SetWidth(4);

$p1->SetColor("blue");

$p1->SetCenter();

$p1->SetLegend("Triumph Tiger -98");

$graph->Add($p1);

 

$p2 = new LinePlot($data2y);

$p2->mark->SetType(MARK_STAR);

$p2->mark->SetFillColor("red");

$p2->mark->SetWidth(4);

$p2->SetColor("red");

$p2->SetCenter();

$p2->SetLegend("New tiger -99");

$graph->Add($p2);

 

// Style can also be specified as SetStyle([1|2|3|4]) or 
// SetStyle("solid"|"dotted"|"dashed"|"lobgdashed") 
$lineplot->SetStyle("dashed");//设置线的样式

 

$graph->yaxis->scale->SetGrace(20);  //设置y轴更优美一些

2.柱形图和饼状图举例

if($tag == 1)

{

$graph = new Graph(600,400,"auto");

$graph->SetScale("textlin");

$graph->setMarginColor('lightblue');

$graph->SetShadow();

$graph->setMargin(30,100,30,60);

//设置标题;

$graph->title->set("文章分类汇总");

$graph->title->SetMargin(3);

$graph->title->setfont(FF_SIMSUN,FS_BOLD);

$graph->title->setcolor('black@0.5');

 

$graph->yaxis->title->SetFont(FF_SIMSUN,FS_BOLD);

$graph->xaxis->title->SetFont(FF_SIMSUN,FS_BOLD);

$graph->xaxis->SetFont(FF_SIMSUN,FS_NORMAL);

$graph->xaxis->SetColor('darkblue','black');

$graph->xaxis->SetTickLabels($name);

$graph->xaxis->SetLabelAngle(30);

$bplot  =  new  BarPlot($article_num);

$bplot->SetFillColor("orange");

$bplot->value->SetFormat('%d');

$bplot->SetShadow('darkgray');

$bplot->value->show();

$graph->legend->SetFont(FF_SIMSUN,FS_BOLD);

$bplot->SetLegend("文章数");

$graph->Add($bplot);

$graph->Stroke();

}

else

{

$graph1 = new PieGraph(600,400,"auto");

$graph1->SetScale("textlin");

$graph1->SetShadow();

$graph1->title->setFont(FF_SIMSUN,FS_BOLD);

$graph1->title->set("用户文章饼形图");

$graph1->setMargin(30,100,30,60);

$p1 = new pieplot3d($article_num);

$p1->setAngle(80);

$p1->setsize(0.5);

$p1->setShadow();

$p1->ExplodeSlice(2);

$p1->SetCenter(0.4);

$graph1->legend->SetFont(FF_SIMSUN,FS_NORMAL);

$graph1->legend->setshadow();

$p1->SetLegends($name);

$graph1->Add($p1);

$graph1->Stroke();

}

?>

 

//生成本地图片

$graph->Stroke(“路径/文件名.png”);