# Arranging subplots on a square regular grid Classic List Threaded 4 messages Open this post in threaded view
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## Arranging subplots on a square regular grid

 Hello, I would like to arrange a number of square subplots (as in subplots with square axes as obtained with `ax.axis('equal')`) in a grid such that the distance between rows and columns is exactly the same. I can use a GridSpec but, as soon as I ask for the axes to be square, the distance between axes changes. Is there a way to enforce the equal distances constrain (namely stretch the padding between the axes and the margin of the figure but do not stretch the padding between axes) or the only solution is to do it manually? Thank you in advance. Best, Dan _______________________________________________ Matplotlib-users mailing list [hidden email] https://mail.python.org/mailman/listinfo/matplotlib-users
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## Re: Arranging subplots on a square regular grid

 If you're okay with a fixed figure size, you can use plt.figaspect to set this up fairly easily: (i.e. this will be incorrect as soon as you resize the plot window)``````import numpy as np import matplotlib.pyplot as plt nrows, ncols = 8, 12 dx, dy = 1, 2 figsize = plt.figaspect(float(dy * nrows) / float(dx * ncols)) fig, axes = plt.subplots(nrows, ncols, figsize=figsize) for ax in axes.flat: data = np.random.random((10*dy, 10*dx)) ax.imshow(data, interpolation='none', cmap='gray') ax.set(xticks=[], yticks=[]) pad = 0.05 # Padding around the edge of the figure xpad, ypad = dx * pad, dy * pad fig.subplots_adjust(left=xpad, right=1-xpad, top=1-ypad, bottom=ypad) plt.show()```````(From here, for reference: https://stackoverflow.com/questions/32633322/changing-aspect-ratio-of-subplots-in-matplotlib/32635933#32635933 )``If you need the spacing to remain constant as the figure size changes, it's possible, but more complex. You may find it's easiest to use draw callbacks in that case.``Hope that helps,``-Joe`On Tue, Oct 30, 2018 at 4:44 PM Daniele Nicolodi <[hidden email]> wrote:Hello, I would like to arrange a number of square subplots (as in subplots with square axes as obtained with `ax.axis('equal')`) in a grid such that the distance between rows and columns is exactly the same. I can use a GridSpec but, as soon as I ask for the axes to be square, the distance between axes changes. Is there a way to enforce the equal distances constrain (namely stretch the padding between the axes and the margin of the figure but do not stretch the padding between axes) or the only solution is to do it manually? Thank you in advance. Best, Dan _______________________________________________ Matplotlib-users mailing list [hidden email] https://mail.python.org/mailman/listinfo/matplotlib-users _______________________________________________ Matplotlib-users mailing list [hidden email] https://mail.python.org/mailman/listinfo/matplotlib-users
 Hi Daniele,This is also explicitly the use-case that `axes_grid1` toolkit is meant for.   I’m trying to move as much axes_grid1 stuff out of the toolkit into the main code as possible, but what you want is orthogonal to how layout managers that are currently in matplotlib work, so axes_grid1 is still useful here. https://matplotlib.org/gallery/axes_grid1/simple_axesgrid.htmlCheers,  JodyOn 31 Oct 2018, at 08:30, Joe Kington <[hidden email]> wrote:If you're okay with a fixed figure size, you can use plt.figaspect to set this up fairly easily: (i.e. this will be incorrect as soon as you resize the plot window)``````import numpy as np import matplotlib.pyplot as plt nrows, ncols = 8, 12 dx, dy = 1, 2 figsize = plt.figaspect(float(dy * nrows) / float(dx * ncols)) fig, axes = plt.subplots(nrows, ncols, figsize=figsize) for ax in axes.flat: data = np.random.random((10*dy, 10*dx)) ax.imshow(data, interpolation='none', cmap='gray') ax.set(xticks=[], yticks=[]) pad = 0.05 # Padding around the edge of the figure xpad, ypad = dx * pad, dy * pad fig.subplots_adjust(left=xpad, right=1-xpad, top=1-ypad, bottom=ypad) plt.show()```````(From here, for reference: https://stackoverflow.com/questions/32633322/changing-aspect-ratio-of-subplots-in-matplotlib/32635933#32635933 )``If you need the spacing to remain constant as the figure size changes, it's possible, but more complex. You may find it's easiest to use draw callbacks in that case.``Hope that helps,``-Joe`On Tue, Oct 30, 2018 at 4:44 PM Daniele Nicolodi <[hidden email]> wrote:Hello, I would like to arrange a number of square subplots (as in subplots with square axes as obtained with `ax.axis('equal')`) in a grid such that the distance between rows and columns is exactly the same. I can use a GridSpec but, as soon as I ask for the axes to be square, the distance between axes changes. Is there a way to enforce the equal distances constrain (namely stretch the padding between the axes and the margin of the figure but do not stretch the padding between axes) or the only solution is to do it manually? Thank you in advance. Best, Dan _______________________________________________ Matplotlib-users mailing list [hidden email] https://mail.python.org/mailman/listinfo/matplotlib-users _______________________________________________Matplotlib-users mailing list[hidden email]https://mail.python.org/mailman/listinfo/matplotlib-users --Jody Klymak    http://web.uvic.ca/~jklymak/ _______________________________________________ Matplotlib-users mailing list [hidden email] https://mail.python.org/mailman/listinfo/matplotlib-users