Jpgraph不会更改我的barplot上的颜色 [英] Jpgraph wont change colors on my barplot

问题描述

我刚刚开始尝试制作jpgraph和XAMPP. 当我在网上阅读一些文章时，它说您可以将一组颜色传递给setfillcolor，以便每个条形都是不同的颜色.但是，每当我通过它的颜色时，图形就不会从其默认的浅蓝色更改.

I'm just getting started with jpgraph and XAMPP I was looking to make a barplot. As I was reading some articles on the web it said you could pass in an array of colors to setfillcolor so that each bar would be a different color. However whenever I pass it color the graph won't change from its default color of light blue.

图形响应s更改数据，但不更改颜色. 我尝试了一个累积的条形图示例，它似乎对颜色敏感.

The graph respond s to changes in data but not changes to color. I tried with an accumulated bar graph example and that seems to be color responsive.

我不确定如何诊断这样的问题.请帮忙！

I'm not sure how to diagnose a problem like this. Help please!

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

Code Below(Example from the Jpgraph documentation with color changed from orange to #B0C4DE [orange from the original example doesn't show up]):

<?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();
?>

推荐答案

我遇到了同样的问题，我发现的解决方案是在BarPlot类初始化后定义格式

I had the same problem, the solution I found is to define the formatting after the BarPlot class initialization

$bplot = new BarPlot($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');

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