On Tue, Jun 2, 2009 at 07:33, John Hunter<jdh2...@gmail.com> wrote:
> On Tue, Jun 2, 2009 at 9:03 AM, Tom Vaughan <t...@software6.net> wrote:
>> Is it possible to add subplots to a figure if I don't know in advance
>> how many subplots I need to add?
>>
>> What I do now is I call add_subplot like add_subplot(i, 1, i) where i
>> is 1 initially, and just increases by 1 on each call. This almost
>> works. Except the first plot takes up the whole figure, the second
>> plot is placed on top of the bottom half of the first plot, etc. Is
>> there a way to "resize" the plots when a subplot is added? Or how
>> would I "re-plot" the previous subplots?
>
> See the Axes.change_geometry command
>
> http://matplotlib.sourceforge.net/api/axes_api.html#matplotlib.axes.SubplotBase.change_geometry
>
> As in this example::
>
> import matplotlib.pyplot as plt
>
> # start with one
> fig = plt.figure()
> ax = fig.add_subplot(111)
> ax.plot([1,2,3])
>
> # now later you get a new subplot; change the geometry of the existing
> n = len(fig.axes)
> for i in range(n):
> fig.axes[i].change_geometry(n+1, 1, i+1)
Awesome. Thanks.
Strangely this doesn't quite work for me. Luckily I keep a list of my
subplots. So I do:
def new_subplot(self):
nsubplots = len(self.__subplots) + 1
for i, subplot in enumerate(self.__subplots):
subplot.change_geometry(nsubplots, 1, i + 1)
subplot = self.figure.add_subplot(nsubplots, 1, nsubplots)
subplot.grid(True)
self.__subplots.append(subplot)
self.__subplot = subplot
Interestingly, if I were to 'print dir(self.figure.axes[i])' I can see
the change_geometry attribute, but when I attempt to call it, I am
told "AttributeError: 'AxesSubplot' object has no attribute
'change_geomtry'" This lead me to what I have above.
Thanks.
-Tom
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