How can I draw a straight line in jfreechart?

Question

如何在jfreechart图表中用等式y=m*x+n画一条直线？

Answer 1

Sounds simple enough ... I've never used it, but there is a XYPlot class which sounds like a decent place to start. You can create one using the ChartFactory , to make it a bit easier. You will need to implement a class that implements the XYDataSet interface, to return the actual points (ie evalutate your equation).