Jpgraph 不会改变我的条形图上的颜色

我刚刚开始使用 jpgraph 和 XAMPP 我想制作一个条形图。 当我在网上阅读一些文章时，它说您可以传递一系列颜色来设置填充颜色，以便每个条形都具有不同的颜色。然而，每当我传递它的颜色时，图表都不会改变其默认的浅蓝色颜色。

图表响应数据的变化，但不响应颜色的变化。 我尝试使用累积条形图示例，这似乎是颜色响应的。

我不知道如何诊断这样的问题。请帮助！

下面的代码（来自 Jpgraph 文档的示例，颜色从橙色更改为 #B0C4DE [原始示例中的橙色未显示]）：

<?php // content="text/plain; charset=utf-8"
require_once(dirname(__FILE__)."\lib\jpgraph-3.5.0b1\src\jpgraph.php");
require_once(dirname(__FILE__)."\lib\jpgraph-3.5.0b1\src\jpgraph_line.php");
require_once(dirname(__FILE__)."\lib\jpgraph-3.5.0b1\src\jpgraph_bar.php");

$datay=array(2,3,5,25,15,6,3);
$datax=array('Jan','Feb','Mar','Apr','May','Jun','Jul');

// Size of graph
$width=400;
$height=500;

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

// Rotate graph 90 degrees and set margin
$graph->Set90AndMargin(50,20,50,30);

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

// Setup title
$graph->title->Set('Horizontal bar graph ex 1');
$graph->title->SetFont(FF_VERDANA,FS_BOLD,14);

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

// Some extra margin looks nicer
$graph->xaxis->SetLabelMargin(10);

// 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);

// We don't want to display Y-axis
$graph->yaxis->Hide();

// Now create a bar pot
$bplot = new BarPlot($datay);

$bplot->SetFillColor("#B0C4DE");
//  ALSO tried:
//  $bplot->SetColor(array("red","green","blue","gray"));
$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);

// .. and stroke the graph
$graph->Stroke();
?>

我遇到了同样的问题，我找到的解决方案是在 BarPlot 类初始化后定义格式

$bplot = new BarPlot($datay);
$graph->Add($bplot);
$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');

找到解决方案here