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What do you mean by "next to the other"? Do you mean that you want one line to be drawn not at exactly the correct value but slightly above or below the value? You could also compare your data points and decide whether the series are too close to one another. In this case you could hide one of the s...

I don't think it's easily possible to have different scales in such cases.

What about using a logarithmic scale for all of the points if the maximum value is much larger than the average value?

I managed to hack up a solution by overriding DateAxis.drawTickMarksAndLabels(). The method itself doesn't draw the domain grid lines (only the ticks and tick labels), but returns an AxisState object which contains the list of ticks drawn and which is later passed on to XYPlot.drawDomainGridlines()....

Hi, in my XYPlot of a time series chart I'm using a DateAxis for the domain axis which displays months. I want each month to have a vertical grid line, so I tried using a 1-month TickUnit. However, the tick labels for the months (formatted as "mm/yyyy") will then overlap each other if the width of m...