如何實現，JPGRAPH組件，用動態的數值產生相應的圖形

kahn178 2009-07-07 09:58:04

如何實現，JPGRAPH組件，用動態的數值產生相應的圖形：

例如，我要實現，用內個數據，實現柱形圖，但是數據來源是數據庫，如何實現呢？？？

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kahn178 2009-07-08

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非常感谢，弄出来了。

程序猿之殇 2009-07-07

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以这为例.只需要构造个一维数组就可以了.
$datay=array(12,26,9,17,31);
从数据库里读出数据,将数据传给数组,这个应该很简单吧.



include_once ("../jpgraph.php");

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



$datay=array(12,26,9,17,31);



// Create the graph. 

// One minute timeout for the cached image

// INLINE_NO means don't stream it back to the browser.

$graph = new Graph(310,250,'auto');

$graph->SetScale("textlin");

$graph->img->SetMargin(60,30,20,40);

$graph->yaxis->SetTitleMargin(45);

$graph->yaxis->scale->SetGrace(30);

$graph->SetShadow();



// Turn the tickmarks

$graph->xaxis->SetTickSide(SIDE_DOWN);

$graph->yaxis->SetTickSide(SIDE_LEFT);



// Create a bar pot

$bplot = new BarPlot($datay);



// Create targets for the image maps. One for each column

$targ=array("bar_clsmex1.php#1","bar_clsmex1.php#2","bar_clsmex1.php#3","bar_clsmex1.php#4","bar_clsmex1.php#5","bar_clsmex1.php#6");

$alts=array("val=%d","val=%d","val=%d","val=%d","val=%d","val=%d");

$bplot->SetCSIMTargets($targ,$alts);

$bplot->SetFillColor("orange");



// Use a shadow on the bar graphs (just use the default settings)

$bplot->SetShadow();

$bplot->value->SetFormat(" $ %2.1f",70);

$bplot->value->SetFont(FF_ARIAL,FS_NORMAL,9);

$bplot->value->SetColor("blue");

$bplot->value->Show();



$graph->Add($bplot);



$graph->title->Set("Image maps barex1");

$graph->xaxis->title->Set("X-title");

$graph->yaxis->title->Set("Y-title");



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

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

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



// Send back the HTML page which will call this script again

// to retrieve the image.

$graph->StrokeCSIM();