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In the meantime I wrote a specialized axis. Maybe a similar feature can be added to JFreeChart? package test; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.event.AxisChangeEvent; import org.jfree.chart.plot.Plot; import org.jfree.chart.plot.ValueAxisPlot; import org.jfree.data.Range...

Hi, I want to limit within which ranges the chart can be zoomed out and panned. Is this possible? Example: I have a dataset with x values in range 0-100 and y values 10-35. Now I want to ensure that the chart never displays data that are not in the x and y ranges of my dataset. So I never want to se...

Hi Martin, the patch looks good although I was not able to test it (I've got a new computer and my test environment is not fully setup yet...). Using the axis.pan() method is much better. I broadly remember that there have been problems with panning logarithmic axes. They will still exist because Lo...

Hi Ulrich! Just had a look at your patch. The patch looks recenable, but I can't get the combined plots to pan. Your patch handles CombinedDomainXYPlot and CombinedRangeXYPlot. Thus, the CombinedXYPlotDemo2 resp. CombinedXYPlotDemo4 should IMHO be pannable with the patch applied. However, I can't s...

JFreeChart is back. Great!!!

I have added my request as a patch to the current SVN release: https://sourceforge.net/tracker/?func=d ... tid=315494

Ulrich

Hello David,
I just want to give you a small trigger to have a look on this patch. Do you want to use it in JFreeChart?
Ulrich

Hello David, the new panning feature works well! Please add the following method to the CombinedDomainXYPlot class to enable panning of the range axis: public void panRangeAxes(double percent, PlotRenderingInfo info, Point2D source) { if (!isRangePannable()) { return; } XYPlot subplot = findSubplot(...

Hi David, I have tested the new SamplingXYRenderer for my purposes and found some issues. I have written a small test program to visualize the difference between the standard XYLineAndShapeRenderer and the new SamplingXYRenderer. As far as I have understood there should be no difference? The test pr...

Yes, that will do it - thanks. I'm wondering if I can't make the code a little cleaner by just delegating to a pan(double percent) method in the axis class, then have the axis handle it appropriately. Seems to be a good idea. The plot itself can check if the axis supports panning and delegates the ...

I even wonder, why (for the panning) my Date Axis changed into a Value Axis.
So formatting this way doesn't work anymore?

Have you tried it? I think it should work. DateAxis is just a subclass of the ValueAxis class.

David, I've seen that you have committed some stuff. Well done! I have the following comments: Look at my patch above to fix the logarithmic axis problems. The CombinedDomain/RangeXYPlot plots need some specific panning code. I have implemented them as follows: + In the CombinedDomainXYPlot the panD...

Post a patch if you are successful!

The following code works also with logarithmic axis. public void panRangeAxis(double panRange, PlotRenderingInfo info, Point2D source) { for (int i = 0; i < getRangeAxisCount(); i++) { ValueAxis rangeAxis = getRangeAxis(i); double oldLowerPixel = rangeAxis.valueToJava2D(rangeAxis.getLowerBound(), in...

The problem does already exist in my patch. public void panRangeAxis(double panRange, PlotRenderingInfo info, Point2D source) { double fullRange = (getOrientation() == PlotOrientation.HORIZONTAL ? info.getDataArea() .getWidth() : info.getDataArea().getHeight()); for (int i = 0; i < getRangeAxisCount...

That sounds great. Let me know if you need any help.