[Matplotlib-users] Potential divide by zero problem in ticker.py

[O'Keefe, M. <Mic...@nr...>]

Line 733 in ticker.py in matplotlib 0.87.2 has a potential divide by =
zero error:

var =3D dv/max(abs(vmin),abs(vmax))

I've triggered it with the following:

import pylab
import numpy as np
t =3D np.array([0.,1.,2.,3.],float)
a =3D np.array([0.,0.,0.,0.],float)
pylab.plot(t,a)

The error is:

Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "C:\Python24\Lib\site-packages\matplotlib\pylab.py", line 2018, =
in plot
    ret =3D  gca().plot(*args, **kwargs)
  File "C:\Python24\Lib\site-packages\matplotlib\axes.py", line 2790, in =
plot
    self.autoscale_view()
  File "C:\Python24\Lib\site-packages\matplotlib\axes.py", line 817, in =
autoscal
e_view
    self.set_ylim(locator.autoscale())
  File "c:\python24\lib\site-packages\matplotlib\ticker.py", line 798, =
in autosc
ale
    return take(self.bin_boundaries(dmin, dmax), [0,-1])
  File "c:\python24\lib\site-packages\matplotlib\ticker.py", line 768, =
in bin_bo
undaries
    scale, offset =3D scale_range(vmin, vmax, nbins)
  File "c:\python24\lib\site-packages\matplotlib\ticker.py", line 733, =
in scale_
range
    var =3D dv/max(abs(vmin), abs(vmax))
ZeroDivisionError: float division