From: Paul Ivanov <pivanov...@gmail.com> To: Larry Evans <cppljev...@suddenlink.net> Cc: Bcc: Subject: Re: [Matplotlib-users] what does numRows, numCols in subplot docs mean? Reply-To: In-Reply-To: <4d32e05d.4090...@suddenlink.net> X-PGP-Key: http://pirsquared.org/PaulIvanov0F3E28F7.asc
Larry Evans, on 2011-01-16 06:11, wrote:
> subplot(numRows, numCols, plotNum)
>
>
> New subplots that overlap old will delete the old axes.
>
> However, that doc does not explain what a row or column is or what
> overlap means.
>
> Is there some way the figure is partitioned into rows and columns and the
> subplots appear in these rows and columns. If so, then how is this
> partition
> done? Does subplot(1,2,1) appear to the left and at same level as
> subplot(1,2,2)?
> What if there's subplot(1,2,1) and subplot(2,1,1). Do they overlap and
> if so, why?
> IOW, what's the definition of overlap?
Hi Larry,
Overlap means identical parameters for subplot:
In [1]: ax1 = plt.subplot(1,2,1)
In [2]: ax2 = plt.subplot(1,2,2)
In [3]: ax3 = plt.subplot(1,2,1) # overlap, will delete ax1
In [4]: fig = plt.gcf()
In [5]: fig.axes
Out[5]:
[<matplotlib.axes.AxesSubplot object at 0xa1b582c>,
<matplotlib.axes.AxesSubplot object at 0xa33968c>]
In [6]: ax1
Out[6]: <matplotlib.axes.AxesSubplot object at 0xa1b582c>
In [7]: ax2
Out[7]: <matplotlib.axes.AxesSubplot object at 0xa33968c>
In [8]: ax3
Out[8]: <matplotlib.axes.AxesSubplot object at 0xa1b582c>
In [9]: ax4 = plt.subplot(2,2,1) # also overlaps with ax3
In [10]: ax5 = plt.subplot(2,2,4) # overlaps with ax2
In [12]: fig.axes
Out[12]:
[<matplotlib.axes.AxesSubplot object at 0xa49882c>,
<matplotlib.axes.AxesSubplot object at 0xa5118ac>]
The last parameter ("plotNum") for subplot determines which row
and column you want based on something like the formula:
row = plotNum // numCols
column = plotNum % numCols
Hope that helps,
--
Paul Ivanov
314 address only used for lists, off-list direct email at:
http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7
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