Changing the marks on a scatter plot?

[Mike Keller]

I have a scatterplot that, right now, displays rectangles. Is there a way to change this to smaller dots? I can't seem to find any information regarding it.

[david.gilbert]

If you are using the XYLineAndShapeRenderer (it is the default) then you can:

(1) Call the setSeriesShape(...) method to change the shape that is displayed;

(2) Replace the renderer with an XYDotRenderer.

[Mike Keller]

Thanks, that's exactly the answer I needed!

Edit: Except one thing...how do I change the renderer used?

[david.gilbert]

Code: Select all

XYPlot plot = (XYPlot) chart.getPlot();
plot.setRenderer(new XYDotRenderer());

[Mike Keller]

Oh, that's simple. You thought of everything!

[DeO]

Is there a way to set or even get the current active shape of a series?
Are there DefaultShapes as like Color.BLUE which can be used?

[hbro]

Check the ShapeUtilities API Reference

http://www.jfree.org/jcommon/api/org/jf ... ities.html

[david.gilbert]

Is there a way to set or even get the current active shape of a series?
Are there DefaultShapes as like Color.BLUE which can be used?

If you rely on the defaults, they are assigned to the renderer the first time the chart is drawn, so it is tricky to find out the shapes until after the chart has been rendered (the renderer's getSeriesShape(int) method will return null prior to the first rendering). You *could* call lookupSeriesShape(int) which will do the default auto-populate for the shape if it hasn't already been done or disabled.

Color.BLUE is not a shape, so I'm not quite sure what you meant by the second question.