BI系统之统计图表的绘制[后端实现]

因为在开发内部BI系统中需要画出统计图表，我选了Jpgraph 开源绘图工具实现需求。

之前实现过需求，没想到这次又花了很多时间回忆，各种搜索，真的是好记性不如烂笔头，

不会总结的人没有未来啊。

常用的三种图表样式：

|———— 3D饼图：

include ("jpgraph/jpgraph.php");
include ("jpgraph/jpgraph_pie.php");
include ("jpgraph/jpgraph_pie3d.php");
$data = array(218,100);
$datatitle = array('男','女');
$title = "男女占比";

$width = 490;
$height = 350;
$graph = new PieGraph($width,$height,'auto');

$graph->SetShadow();

$graph->title->Set($title);

$graph->title->SetFont(FF_SIMSUN,FS_BOLD,12);

$p1 = new PiePlot3D($data);//创建3D饼形图对象

$p1->ExplodeSlice(1); //分割线
$p1->SetCenter(0.45);

$graph->legend->SetFont(FF_SIMSUN,FS_BOLD,10); //设置旁注字体
$graph->legend->Pos(0.89,0.9,'center','bottom');//设置旁注位置
$graph->legend->SetFrameWeight(0); //图例文字外框边框border设置为0
$graph->legend->SetFillColor('#FFFFFF'); //图例文字框内的填充颜色
$graph->legend->SetShadow('#C8C8C8', 0);
$graph->legend->SetLayout(LEGEND_VERT);//旁注摆放形式[竖直]

$p1->SetLegends($datatitle);

$graph->Add($p1);
$graph->Stroke();

|—————普通圆形图：

include ("jpgraph/jpgraph.php");
include ("jpgraph/jpgraph_pie.php");
$data = array(218,100);
$datatitle = array('男','女');
$title = "男女占比";

$width = 490;
$height = 350;
$graph = new PieGraph($width,$height,'auto');

$graph->SetShadow();

$graph->title->Set($title);

$graph->title->SetFont(FF_SIMSUN,FS_BOLD,12);

$graph->legend->SetFont(FF_SIMSUN,FS_BOLD,10); //设置旁注字体
$graph->legend->Pos(0.89,0.9,'center','bottom');//设置旁注位置
$graph->legend->SetFrameWeight(0); //图例文字外框边框border设置为0
$graph->legend->SetFillColor('#FFFFFF'); //图例文字框内的填充颜色
$graph->legend->SetShadow('#C8C8C8', 0);
$graph->legend->SetLayout(LEGEND_VERT);//旁注摆放形式[竖直]

// Create pie plot
$p1 = new PiePlot($data);
$p1->SetCenter(0.5,0.55);
$p1->SetSize(0.3);

// Enable and set policy for guide-lines. Make labels line up vertically
$p1->SetGuideLines(true,false);
$p1->SetGuideLinesAdjust(1.1);
$p1->SetLegends($datatitle);

// Setup the labels
$p1->SetLabelType(PIE_VALUE_PER);
$p1->value->Show();
$p1->value->SetFont(FF_ARIAL,FS_NORMAL,9);
$p1->value->SetFormat('%2.1f%%');

$graph->legend->SetLayout(LEGEND_VERT);

$graph->Add($p1);
$graph->Stroke();

|————柱状图：

require_once ('jpgraph/jpgraph.php');
require_once ('jpgraph/jpgraph_bar.php');

$datay = array('23','12','4','67','9');
$datax = array('0-10','11-50','51-100','101-500','500+');
$title = "综合排名";

$width=520;
$height=380;

// Set the basic parameters of the graph
$graph = new Graph($width,$height,'auto');
$graph->SetScale("textlin");

$top = 50;
$bottom = 80;
$left = 80;
$right = 25;
$graph->Set90AndMargin($left,$right,$top,$bottom);

$graph->xaxis->SetPos('min');

// Nice shadow
$graph->SetShadow();

// Setup title
$graph->title->Set($title);
$graph->title->SetFont(FF_SIMSUN,FS_BOLD,10);

// Setup X-axis
$graph->xaxis->SetTickLabels($datax);
//
$graph->xaxis->SetFont(FF_SIMSUN,FS_BOLD,12);


// Some extra margin looks nicer
$graph->xaxis->SetLabelMargin(5);

// Label align for X-axis
$graph->xaxis->SetLabelAlign('right','center');

// Add some grace to y-axis so the bars doesn't go
// all the way to the end of the plot area
$graph->yaxis->scale->SetGrace(20);

// Setup the Y-axis to be displayed in the bottom of the
// graph. We also finetune the exact layout of the title,
// ticks and labels to make them look nice.
$graph->yaxis->SetPos('max');

// First make the labels look right
$graph->yaxis->SetLabelAlign('center','top');
$graph->yaxis->SetLabelFormat('%d');
$graph->yaxis->SetLabelSide(SIDE_RIGHT);

// The fix the tick marks
$graph->yaxis->SetTickSide(SIDE_LEFT);

// Finally setup the title
$graph->yaxis->SetTitleSide(SIDE_RIGHT);
$graph->yaxis->SetTitleMargin(35);

// Now create a bar pot
$bplot = new BarPlot($datay);
$bplot->SetFillColor("orange");
$bplot->SetShadow();

//You can change the width of the bars if you like
//$bplot->SetWidth(0.5);

// We want to display the value of each bar at the top
$bplot->value->Show();
$bplot->value->SetFont(FF_ARIAL,FS_BOLD,12);
$bplot->value->SetAlign('left','center');
$bplot->value->SetColor("black","darkred");
$bplot->value->SetFormat('%.1f mkr');

// Add the bar to the graph
$graph->Add($bplot);
$graph->Stroke();

以上为常用的图表及对应的后端实现：给自己记忆和需要人的便捷;