难以更改JFreeChart的背景颜色 [英] Difficulty Changing background colour of JFreeChart

问题描述

我正在尝试将背景色更改为我的条形图，到目前为止似乎没有任何作用

这是我的下面的代码:

  JFreeChart expbarchart = ChartFactory.createBarChart(每月支出"，支出类型"，金额(£)"，barexp，PlotOrientation.VERTICAL，false，true，false)；ChartPanel expframe =新的ChartPanel(expbarchart);expframe.setLocation(695，49);expframe.setSize(641,500);expframe.setBorder(new EtchedBorder(EtchedBorder.LOWERED，new Color(173，216，230)，null));graphpanel.add(expframe); 

我尝试做 .setbackground()，但它似乎不起作用

谢谢

解决方案

  StandardChartTheme主题=新的StandardChartTheme("JFree/Shadow"，true);颜色=新颜色(173，216，230);theme.setPlotBackgroundPaint(color);theme.setChartBackgroundPaint(color.brighter());ChartFactory.setChartTheme(theme); 

Im trying to change the background color to my bar chart and so far nothing seems to be working

Here is my code below:

JFreeChart expbarchart = ChartFactory.createBarChart("Monthly Expenditures", "Expenditure Type", "Amount (£)", barexp, PlotOrientation.VERTICAL, false, true, false);
    ChartPanel expframe = new ChartPanel(expbarchart);
    expframe.setLocation(695, 49);
    expframe.setSize(641,500);
    expframe.setBorder(new EtchedBorder(EtchedBorder.LOWERED, new Color(173, 216, 230), null));
    graphpanel.add(expframe);

I have tried doing .setbackground() and it does not seem to work

Thanks

解决方案

BarChartDemo1 shows you how to set the chart background paint:

chart.setBackgroundPaint(new Color(173, 216, 230));

It also shows you how to set a ChartTheme that you can change:

StandardChartTheme theme = new StandardChartTheme("JFree/Shadow", true);
Color color = new Color(173, 216, 230);
theme.setPlotBackgroundPaint(color);
theme.setChartBackgroundPaint(color.brighter());
ChartFactory.setChartTheme(theme);

这篇关于难以更改JFreeChart的背景颜色的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！