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This seems to be a bug! It doesn't make sense to return null if there is internally a color.

This is not a good solution, as we need this feature to do this automatically. setIgnoreZeroValues() should have a second parameter to also remove the related color of the color series - and not only the zero value. My workaround: /** * Remove zero values and their series colors. * * @param chart JF...

ValueAxis.setUpperMargin() doesn't do anything if the axis has no auto-range - why?

What's the problem you already need to state one fixed class like "Month.class" and the formatter is of course also fixed for one axis. So you can compute the maximum space for a label, e.g. a Date with "yyyy-MM-dd".

I've written my own TickUnitSource but keep on increasing number of DateTickUnits as the wider the time span on the x axis is, the more DateTickUnits are required - otherwise, the labels fall back into "overlapping mode" ... :cry: /** * Create tick units for a time period (e.g. Month.class) and date...

How can I change the default series shapes? E.g. I would like to have a square for the first item and circles for the remaining items. The shapes are drawn in DefaultDrawingSuppler with a static method createStandardSeriesShapes(). I can work around by instantiating a new DefaultDrawingSupplier with...

no support ... as you can see, most of threads here are general JFreeChart discussions. Only very few are special to stock market issues ... which could be discussed in the general JFreeChart forum too, as there are much more people than here.

Download JFreeChart and go into source\org\jfree\chart\demo that contains some example sources. Look into BarChartDemo1.java and you will learn to find your answer.

/** * Save chart to file in JPG format. * * @param chart JFreeChart. * @param fileName Name of JPG file. * @param width Width of JPG image. * @param height Height of JPG image. * @return Final file name used. * @throws IOException on error. */ static public final String saveChartToJPG(final JFreeCh...

add some margins to your axes to increase the data range (lower/upper bound).

"[Solved]" doesn't help anybody here if you don't write what was wrong and how you solved it ...

/** * Save chart as SVG file. * Required libs: Apache Batik (batik-svggen.jar, batik-dom.jar, dom.jar). * * @param chart JFreeChart to save. * @param fileName Name of file to save chart in. * @param width Width of chart graphic. * @param height Height of chart graphic. * @return Final file name use...

See DatasetUtilities.findMaximumDomainValue(), etc.

I finally posted the axes as patches on sourceforge:

[1891921] Enhanced LogarithmicAxis

[1891928] PercentageAxis

In addition, both axes unifiy the two refreshTicksVertical()/refreshTicksHorizontal() and offer new superscript exponents for the tick labels.

My favourites are:

* [ 1891921 ] enhanced LogarithmicAxis
* [ 1891928 ] PercentageAxis
* [ 1891820 ] Better Pie Label Layout