pie charts

[phani kon]

Hi,

Can anyone help me in this case?

I am working on pie charts using cewolf. I would like to know, Is there any way I can show the percentages on the lables of the pie chart.Please let me know, do you have any examples?


thanks a lot

[Ulf Dittmer]

The labels are just strings - you can pass in whatever you can stuff into a string.

[phani kon]

Could you please give me some examples for showing percentage on the lables like 73.45%.

Actually I am doing this code in the method DefaultPieDataset

dataset.setValue(sCategory[iCategory],s1);
//Here I am getting the values for s1 as 73.45 on the legend lables. I want show the legend lables as 73.45%

[Ulf Dittmer]

Those labels are taken from the category - the first parameter of that method (which is a string, so it can contain any character you need).

[phani kon]

By using the below code

dataset.setValue(sCategory[iCategory],s1);

I am getting the lables as ALL = 56.78 KIO = 67.89 so on

My question is, How would I change to ALL = 56.78% KIO = 67.89% and so on

[Ulf Dittmer]

If you want the change just the labels -and not the categories-, then the easiest would be to use a custom label generator, something like this:

PiePlot pp = (PiePlot) chart.getPlot();
pp.setLabelGenerator(new PieSectionLabelGenerator() {
    public java.text.AttributedString generateAttributedSectionLabel (PieDataset dataset, Comparable key) {
        return null;
    }

    public String generateSectionLabel (PieDataset dataset, Comparable key)  {
        return ((String) key) + " %";
    }
});

[phani kon]

Thanks for your help. what do I have to write in my jsp page for the?

[Ulf Dittmer]

Are you using cewolf? If so, the easiest way would probably be to write a ChartPostProcessor.