[PyX-user] bug in texter subsystem

[Michael H. <mi...@sp...>]

Hello,

I think I found a bug in the texter subsystem. The rational class doesn't
handle skipdenom=True correctly when denomsuffix is set.

I have a small example:


from pyx import *

texter = graph.axis.texter.rational(denomsuffix=r"\pi", skip1=True, 
skipdenom1=True)
g = graph.graphxy(
    width = 8,
    x = graph.axis.lin(min=0, max=1),
    y = graph.axis.lin(texter=texter, min=0, max=1)
)
g.writePDFfile()


The label of the upmost tick is "1/1pi" instead of "1/pi". According to the
documentation the "1" in the denominator should be omitted.

The bug is in the file pyx/graph/axis/texter.py, method labels, starting at
line 389. Unfortuntely, I didn't fully understand the logic of the code, so I
cannot send you a patch. I've used the latest PyX release 0.14 and Python
3.4.2.

Thank you very much for your help! 

Kind regards,

--Michael