Split a axis label on different lines in a barchart

SimOOn · Post by **SimOOn** » Wed Nov 12, 2008 4:40 pm

Hi,

in a barchart I have an axis label very long (~50c.) which is taking too much space.

As I have to keep an horizontal orientation, I would like to know if it is possible to split it on different lines ?

I tried to modify it by inserting carriage returns but apparently JFreeChart is ignoring them.

Has anyone a solution for this problem ?

Thanks.

matinh · Post by **matinh** » Wed Nov 12, 2008 5:27 pm

Search the forum for "newline" and you get a load of posts asking the same or related questions (like this one).

For what I can tell it's not possible at the moment.

hth,
- martin

SimOOn · Post by **SimOOn** » Wed Nov 12, 2008 7:06 pm

Before posting, I've first searched the forum for an answer but the only things I've found was related to tick and category labels, not to the axis label.

I've also seached in the documentation and I've found nothing to solve my problem.

To illustrate my problem :

matinh · Post by **matinh** » Thu Nov 13, 2008 8:04 am

Drawing axis labels or tick labels should be the same as both use Graphics2D.drawString(), which obviously doesn't draw line breaks.

Don't know if this is an alternative for you, but you could try to rotate the label by using axis.setLabelAngle().

hth,
- martin

Post by **david.gilbert** » Thu Nov 13, 2008 9:03 am

Yes, unfortunately the existing code won't support multi-line axis labels. Changing it wouldn't be so hard...you'd need to change two methods in the Axis class:

getLabelEnclosure() - this returns the dimensions of the label, and is used for layout purposes;

drawLabel() - does the actual label drawing.

There is some code in JFreeChart/JCommon that can help with drawing multiline text - see the TextBlock class in JCommon.

SimOOn · Post by **SimOOn** » Thu Nov 13, 2008 3:52 pm

Ok thanks, I will try to modify these methods to solve my problem.