[Matplotlib-users] get nrows and ncols from Figure

[Benjamin Root]

Wow, it is a bit convoluted. It looks like you can't get this information
directly from the figure object because it is never stored in the figure.
It is stored in the individual axes objects (go figure!). Furthermore, you
would need to watch out for the use of fig.get_axes() because other axes
may be added, such as colorbar axes and such, that were never a part of the
original set of axes.

To get the nrows/ncols from an Axes object:
nrows, ncols, _, _ = ax.get_subplotspec().get_geometry()

I hope that helps!
Ben Root


On Tue, Nov 3, 2015 at 5:54 AM, <aeuii at posteo.de> wrote:

> Hi,
>
> I'm using
>
>     fig, axes = plt.subplots(nrows=2, ncols=3)
>
> to generate a figure and later in code I would like to find out how many
> columns and rows of are in the layout having only Figure object (fig).
>
> I was not able to find those parameters stored in `fig`.  I noticed that
> fig.axes or fig.get_axes() return a flattened list of all axes, but
> without structure (like `axes` from `plt.subplots`).  What's the best
> way to find out `nrows` and `ncols` from `fig`?
>
> Thanks in advance!
>
> Please CC me, because I'm not subscribed to the list.
>
> Best regards,
> Stefan
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