Y Axis is not displaying correct figure for Millions and Billions in JFreeChart

Question

While generating Bar Graph using JFreeChart, I am getting billions and Millions value in scientific numeric format, that is having less readability,

There is any way, so that I can get the value like using JfreeChart.

It has to be dynamic for Million, Billions for all value. Any help will be appreciated.

score 5 · Accepted Answer · answered Apr 08 '17 at 08:02

Thanks to @Haroldo_OK and @trashgod for you hint and finally I got the solution for the same and It's giving me the expected result.

final long MILLION = 1000000L;
    final long BILLION = 1000000000L;
    final long TRILLION = 1000000000000L;
    final long THOUSAND = 1000L;

    NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setNumberFormatOverride(new NumberFormat() {

        @Override
        public Number parse(String source, ParsePosition parsePosition) {
            return null;
        }

        @Override
        public StringBuffer format(long number, StringBuffer toAppendTo, FieldPosition pos) {

            String temp =  number < THOUSAND ? String.valueOf(number) :
                number < MILLION ?  (int)(number / THOUSAND) + " K" :
                number < BILLION ?  (int)(number / MILLION) + " M" :
                number < TRILLION ? (int)(number / BILLION) + " B" : 
                (int)(number / TRILLION) + " T";
            return new StringBuffer(temp);
        }

        @Override
        public StringBuffer format(double number, StringBuffer toAppendTo, FieldPosition pos) {

            String temp =  number < THOUSAND ? String.valueOf(number) :
                number < MILLION ?  (int)(number / THOUSAND) + " K" :
                number < BILLION ?  (int)(number / MILLION) + " M" :
                number < TRILLION ? (int)(number / BILLION) + " B" : 
                (int)(number / TRILLION) + " T";
            return new StringBuffer(temp);
        }
    });

Glad you got it working; also consider making constants `static`, using `_` in numeric constants, and factoring out common code. — trashgod, Apr 08 '17 at 15:02

score 2 · Answer 2 · edited May 23 '17 at 12:10

2

Use invoke setNumberFormatOverride() on your plot's NumberAxis, as shown here. You'll need a custom NumberFormat, possibly using one of the approach shown here or here.

edited May 23 '17 at 12:10

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answered Apr 07 '17 at 18:47

trashgod

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score 1 · Answer 3 · edited May 23 '17 at 11:54

1

Maybe you could create your own custom TickUnits, as this other post suggests.

edited May 23 '17 at 11:54

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answered Apr 07 '17 at 14:13

Haroldo_OK

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Y Axis is not displaying correct figure for Millions and Billions in JFreeChart

3 Answers3