Matplotlib - How to set the distance (in mm/cm/points...) between the xticks

Question

I've been looking on the internet for a long time but couldn't figure out how to make it. I need to draw several figures whose xticks are defined as numpy.arange(1,N), N being different for each figure. I want the spacing between the xticks to be identical on all figures (e.g. 1 cm), that is, the width of each figure must depend on the size of numpy.arange(1,N). Any idea of how to do that?

Answer 1

I think you can do this with a combination of careful control of your axes size (as a fraction of the figure), ax.set_xlim and fig.set_size_inches (doc) to set the real size of the figure.

ex

 fig = plt.figure()
 ax = fig.add_axes([0,0,1,1])
 ax.set_xlim([0,N])
 fig.set_size_inches([N/2.54,h])