How can i assign different colors to each dot in scatter plot using jfreechart in java?

Question

I am a newbie to Java and using JFreechart to display scatter plot.I have a thread which keeps adding points to scatter plot.Color of these points can be different depending upon some property(That is known,not the issue).Currently i am using "XYItemrenderer.setSeriesPaint(0,Color.black);" to change the color but it changes color of all the points.I tried searching and found this-

JFreeChart different colors in different regions for the same dataSeries

But i am confused about how can i pass that information which decides the color of dot to method?

Any help would be appreciated :)

Answer 1

The fact that points differ depending upon some property is the central issue: the defining property needed to assign color is now an attribute of your data model. You can easily change the color in your view's renderer by overriding getItemPaint(), as shown here. The problem then becomes one of accessing the model from the view. The example cited simply references an attribute of the enclosing class, but you may want to pass a model reference to the view explicitly.