Tick mark visiable in polar chart in jfree chart

Question

I am working in polar chart using the jfree library in java. I need show the "Radius tick mark" in the polar chart. I have previously worked in jfree line chart but I am new in polar chart.

I need to get it like this:

Answer 1

As shown here, a PolarPlot is typically created with a radial Axis. While the tick labels on the axis are visible by default, ChartFactory.createPolarChart() disables them:

rangeAxis.setTickMarksVisible(false);

If you have created your chart using the factory, simply enable the tick marks:

PolarPlot plot = (PolarPlot) chart.getPlot();
ValueAxis axis = plot.getAxis();
axis.setTickLabelsVisible(true);

Alternatively, create the plot yourself, as shown here, and leave the tick labels enabled:

ValueAxis radiusAxis = new NumberAxis();
…
PolarPlot plot = new PolarPlot(dataset, radiusAxis, renderer);