JpGraph Piechart背景顏色

Question

我在PHP中使用JpGraph。我可以爲幾乎每個圖表的背景顏色與

$graph->SetBackgroundGradient($bgcolor, $bgcolor, GRAD_HOR, BGRAD_MARGIN);

但我怎麼可以設置餅圖背景顏色？

這是功能最強大的PHP驅動圖表但是仍然沒有$graph->SetBackgroundColor($bgcolor)函數。

溴

Answer 1

你有沒有看SetMarginColor()或SetColor()？

http://jpgraph.net/download/manuals/classref/Graph.html#_GRAPH_SETMARGINCOLOR

Answer 2

<?php // content="text/plain; charset=utf-8" 
require_once ('jpgraph/jpgraph.php'); 
require_once ('jpgraph/jpgraph_pie.php'); 
require_once ('jpgraph/jpgraph_pie3d.php'); 

// Some data 
$data = array(
    array(80,18,15,17), 
    array(35,28,6,34), 
    array(10,28,10,5), 
    array(22,22,10,17)); 

$piepos = array(0.2,0.4,0.65,0.28,0.25,0.75,0.8,0.75); 
$titles = array('USA','Sweden','South America','Australia'); 

$n = count($piepos)/2; 

// A new graph 
$graph = new PieGraph(550,400,'auto'); 

// Specify margins since we put the image in the plot area 
$graph->SetMargin(1,1,40,1); 
$graph->SetMarginColor('navy'); 
$graph->SetShadow(false); 

// Setup background 
$graph->SetBackgroundImage('worldmap1.jpg',BGIMG_FILLPLOT); 

// Setup title 
$graph->title->Set("Pie plots with background image"); 
$graph->title->SetFont(FF_ARIAL,FS_BOLD,20); 
$graph->title->SetColor('white'); 

$p = array(); 
// Create the plots 
for($i=0; $i < $n; ++$i) { 
    $d = "data$i"; 
    $p[] = new PiePlot3D($data[$i]); 
} 

// Position the four pies 
for($i=0; $i < $n; ++$i) { 
    $p[$i]->SetCenter($piepos[2*$i],$piepos[2*$i+1]); 
} 

// Set the titles 
for($i=0; $i < $n; ++$i) { 
    $p[$i]->title->Set($titles[$i]); 
    $p[$i]->title->SetColor('white'); 
    $p[$i]->title->SetFont(FF_ARIAL,FS_BOLD,12); 
} 

// Label font and color setup 
for($i=0; $i < $n; ++$i) { 
    $p[$i]->value->SetFont(FF_ARIAL,FS_BOLD); 
    $p[$i]->value->SetColor('white'); 
} 

// Show the percetages for each slice 
for($i=0; $i < $n; ++$i) { 
    $p[$i]->value->Show(); 
} 

// Label format 
for($i=0; $i < $n; ++$i) { 
    $p[$i]->value->SetFormat("%01.1f%%"); 
} 

// Size of pie in fraction of the width of the graph 
for($i=0; $i < $n; ++$i) { 
    $p[$i]->SetSize(0.15); 
} 

// Format the border around each slice 


for($i=0; $i < $n; ++$i) { 
    $p[$i]->SetEdge(false); 
    $p[$i]->ExplodeSlice(1); 
} 

// Use one legend for the whole graph 
$p[0]->SetLegends(array("May","June","July","Aug")); 
$graph->legend->Pos(0.05,0.35); 
$graph->legend->SetShadow(false); 

for($i=0; $i < $n; ++$i) { 
    $graph->Add($p[$i]); 
} 

$graph->Stroke(); 
?> 

參考：http://jpgraph.net/download/manuals/chunkhtml/ch16.html