On Sun, Feb 6, 2011 at 11:52 AM, Eric Firing <efir...@hawaii.edu> wrote:
> On 02/06/2011 06:59 AM, Mike Kaufman wrote:
> >
> > The help for xlim() says:
> >
> > Set/Get the xlimits of the current axes::
> >
> > xmin, xmax = xlim() # return the current xlim
> > xlim( (xmin, xmax) ) # set the xlim to xmin, xmax
> > xlim( xmin, xmax ) # set the xlim to xmin, xmax
> >
> >
> > but it also has the unexpected behavior of turning off autoscaling if
> used:
> >
> > -----
> > import matplotlib.pyplot as plt
> >
> > plt.clf()
> > ax = plt.subplot(211)
> > plt.draw()
> > print 'autoscale X on: ',ax._autoscaleXon,' xlim: ',plt.xlim()
> > ax.plot([0,.5,1,1.5,2],[0,1,0,1,0])
> > plt.draw()
> > print 'autoscale X on: ',ax._autoscaleXon,' xlim: ',ax.get_xlim(),'\n'
> >
> > ax = plt.subplot(212)
> > plt.draw()
> > print 'autoscale X on: ',ax._autoscaleXon,' xlim: ',ax.get_xlim()
> > plt.plot([0,.5,1,1.5,2],[0,1,0,1,0])
> > plt.draw()
> > print 'autoscale X on: ',ax._autoscaleXon,' xlim: ',ax.get_xlim(),'\n'
> > -----
> >
> > returns:
> >
> > >>> import xlim_unautoscale
> > autoscale X on: True xlim: (0.0, 1.0)
> > autoscale X on: False xlim: (0.0, 1.0)
> >
> > autoscale X on: True xlim: (0.0, 1.0)
> > autoscale X on: True xlim: (0.0, 2.0)
> >
> >
> > I assume that this is because xlim() calls set_xlim() which has
> > auto=False as a default keyword...
> >
> > expected behavior: xlim() should behave exactly like get_xlim()
> > ditto for ylim()
>
> I agree, so I have fixed this in the maintenance branch and in the trunk.
>
> Eric
>
>
Something I just noticed while looking at the x|ylim() functions. The code
for xscale() and yscale() are acting like it returns something, but they
don't. Is this a bug? The documentation doesn't claim that it returns
anything.
Ben Root
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