php jpgraph学习教程

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");