[Matplotlib-users] Axes array for subplots

[Benjamin Root]

By default, `squeeze` is called on the array prior to returning it. This
way, users don't need to deal with 2D arrays when most of the time, they
are dealing with 1D setups. You can specify squeeze=False to subplots to
turn this behavior off and always have a 2D array.

I hope that helps!
Ben Root


On Tue, Apr 17, 2018 at 10:12 AM, Virgil Stokes <vs at it.uu.se> wrote:

> The following line is part of a much larger python (3.6) with Matplotlib
> (2.2.2) program in which the number of subplots is determined from input
> data:
>
>   fig, axarr = plt.subplots(NSub, figsize=(width,height), sharex=True)
>
> This works fine when the number of subplots (NSub) is greater than 1. For
> example when NSub=3, axarr is an array of length 3 and contains:
>
>   array([<matplotlib.axes._subplots.AxesSubplot object at
> 0x0000025900E9DDD8>,
>          <matplotlib.axes._subplots.AxesSubplot object at
> 0x00000259011897F0>,
>          <matplotlib.axes._subplots.AxesSubplot object at
> 0x00000259011C7128>],
>         dtype=object)
>
> However, when NSub=1, axarr contains:
>
>   <matplotlib.axes._subplots.AxesSubplot object at 0x00000161AB26AE80>
>
> and of course, will give an error if axarr is an array; i.e.
>
>   builtins.TypeError: 'AxesSubplot' object does not support indexing
>
> For my code this requires special handling because axarr is no longer an
> array. Why not have axarr contain:
>
>   array([<matplotlib.axes._subplots.AxesSubplot object at
> 0x00000161AB26AE80>],dtype=object)
>
> when NSub=1. IMHO this is consistent; i.e. it is an array with a length
> that is equal to the number of subplots.
>
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