Impossible to change order of legend items???

[rade]

Now the StandardLegend class that had setRenderingOrder() no longer exists, is it possible at all to change the order of legend items (with LegendRenderingOrder)?

I just lost much time and nerves on this...

[rade]

Well, it is not possible (for now...)

http://www.jfree.org/phpBB2/viewtopic.php?p=65210#65210

[skaczor]

I had the same issue. Solved it by adding a new method to LegendTitle class. Also made the stacked bars reverse by default, since it is very unintuitive otherwise.

Patch was submitted to the project:
https://sourceforge.net/tracker/?func=d ... tid=315494

[matinh]

Hi Simon!

Thanks for the patch and for updating this thread! That's a patch one can work with! If everybody would provide high quality patches like this, JFreeChart development would move on much faster!

However, I didn't inlucde the part regarding the default behavior change. For reasons see the patch-tracker entry.

kind regards,
- martin

[kreska]

Hi,

I'm trying to use this method in following way:

Code: Select all

chart.getLegend().setSortOrder( SortOrder.ASCENDING )

but it does not seem to change anything.

Could you please describe what should be done for this to work?

I have XYPlot with DateAxis.

[John Matthews]

SortOrder.ASCENDING is the default SortOrder for a LegendTitle. What happens if you specify SortOrder.DESCENDING?

[kreska]

The problem is they are not sorted ascending. They are sorted in addition order.

[John Matthews]

Right. Addition order is meant to accommodate varying layouts; see fetchLegendItems() for details. For alphanumeric sorting, you might be able to override the method with your own implementation that adds the items in lexicographic order.

[kreska]

So when this method is used? If it cannot be used like I imagine.

[John Matthews]

I've only seen it in LegendTitleTest, but I suppose it might be handy in a vertical legend.

[lemming622]

If need be you could always use presort your datasets with a tree map or the like before adding your dataset to JFreeChart. That way your have control in java for how the map would sort your datasets. Then to extract the datasets out of the map using any one of a number of map looping mechanisms to then finally add the datasets to your plot.
I'm doing this in a plot set up I have at the moment because I need to scale my axis to an undetermined bound and put bound limits on the plot as well. To keep the legend looking nice I also fill my own LegendItemCollection with the String I want to use for each of the datasets in my plot.