On 2015/04/05 11:19 PM, giacomo boffi wrote:
INTRO
=
please consider the following code (I'm trying to draw a timeline)
1 from matplotlib import pyplot, patches
2 fig = pyplot.figure()
3 ax = fig.add_subplot('111')
4 ax.add_patch(patches.Rectangle((1933,0.25), 73, 0.5))
5 pyplot.show()
that gives me a plot with the x axis that goes from 0.0 to 1.0,
now consider
...
5 ax.set_xlim((1933,1933+73))
6 pyplot.show()
this gives me an x axis that goes _exactly_ from 1933 to 2006,
eventually drawing a line superposed to the lower spine
...
5 ax.plot((1933,1933+73),(0,0))
6 pyplot.show()
gives me what I really want, that is an x axis running from 1930 to
2010, with the limits automatically rounded by matplotlib...
(I noted that the extra line forces a rounding also for the y axis
limits, but that's not a problem...)
QUESTION
I want matplotlib to round the limits of the x axis automatically,
when given explicitly the lower and upper limits of the data, how to?
I think the initial problem is that ax.add_patch() is not triggering the
autoscaling that you are looking for; the higher-level plot() function
does so. After your call to ax.add_patch(), try adding
ax.autoscale_view().
Eric
Thank you in advance
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