There appears to be a bug in the 3rd subplot of symlog_demo.py because
the ticker is generating an OverflowError on my powerbook.
The problem is in SymmetricalLogLocator.__call__ when the vmin, vmax =
self._transform.transform((vmin, vmax)) call transforms
vmin,vmax=[-1,1] to [-3.30039237078e+17,1.0] numdec is set to
3.30039237078e+17. Then the while loop runs until I kill the job::
stride = 1
while numdec/stride+1 > self.numticks:
stride += 1
This may have something to do with a platform specific floating point
computations, because I am seeing different results on a linux box I
am also testing on, but even there the results don't look right. For
example, on that box, a 64 bit linux machine, I see [-1,1] transformed
to [2.18190930577e-316, 6.90437063896e-310] and numdec=-1 but the
example does run w/o crashing.
In any case, it looks like there is some non-robust computation going
on, and I'm hoping Michael has a quick insight :-)
JDH
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