A simple plot command, which worked in 0.86, fails in 087.2:
pylab.plot([0.0, 1.0], [0.0, 0.0])
A traceback indicates that it apparently has to do with MaxNLocator
introduced in 0.87.
There was a thread on this list 2 weeks ago started by
daigos@...1043... concerning similar issue, but in that case y-values
were slightly diffrent. Setting pylab.ylim to something like (-1,1)
prior to calling plot(), as John Hunter suggested in that thread, does
not quite work for me in this case.
Also, the changelog to 0.87.2 mentiones that same thread and claims a
fix that "adjusts vmin and vmax if they are nearly the same, not just
if they are equal". In my simple case, they are equal, but still i
figure that it is not being treated gracefully enough.