Displaying horizontal grid lines for a particular axis

[tox0tes]

I added additional axes to my XYLineChart and I was wondering how to specify which axis displays horizontal grid lines. Thanks.

[RichardWest]

I added additional axes to my XYLineChart and I was wondering how to specify which axis displays horizontal grid lines. Thanks.

protected void drawRangeGridlines(java.awt.Graphics2D g2, java.awt.geom.Rectangle2D area, java.util.List ticks)
Draws the gridlines for the plot's primary range axis, if they are visible.

The displayed gridlines will always be drawn with respect to the primary axis which is the axis with index 0 (or the only axis when there is a sole axis). You will have to modify the code if you want to change this behavior. It would be easier to simply change which axis is fhe primary axis though.