In JFreeChart, I am using the setRenderAsPercentage(true)
option for StackedBarRenderer
.
Although the plot itself looks fine (all bars span the whole plot), the range axis labels are not showing percent values (i.e. 0 to 100) but probabilities (i.e. 0 to 1).
How can I achieve percentage values?
You need to set a NumberFormat
for the rangeAxis
like this:
NumberAxis rangeAxis = new NumberAxis("Count");
...
rangeAxis.setNumberFormatOverride(NumberFormat.getPercentInstance());
...
XYPlot plot = new XYPlot(dataset, domainAxis, rangeAxis, renderer);
...
Or you can do this if you already have a plot
NumberAxis rangeAxis2 = (NumberAxis) plot.getRangeAxis();
rangeAxis2.setNumberFormatOverride(NumberFormat.getPercentInstance());
You should then have an chart that looks like this: