Set the aspect ratio of a plot in matplotlib

Question

Using Matplotlib, I want to draw six plots side-by-side. However, I want each plot to have an aspect ratio of 1.

If I run the following:

import matplotlib.pyplot as plt
fig = plt.figure()

for n in range(1, 6):
    fig.add_subplot(1, 6, n)
    plt.axis([0, 4, 0, 4])

plt.show()

Then it shows the six plots "squashed" along the x-axis. This occurs even though I have set the x-axis and the y-axis to be the same length.

How can I make all the plots have an aspect ratio of 1?

Hmm, you could set the figaspect so as to have control over the figure aspect ratio to start with. — Aleksander Lidtke
– Aleksander Lidtke, Commented Oct 15, 2015 at 17:28
Try this: import matplotlib.pyplot as plt fig = plt.figure() for n in range(1, 6): a=fig.add_subplot(1, 6, n) a.set_aspect(1) plt.axis([0, 4, 0, 4]) — Aleksander Lidtke
– Aleksander Lidtke, Commented Oct 15, 2015 at 17:34
@AleksanderLidtke please don't put long pieces of code in comments. And for that matter, don't answer questions in comments. Make an answer. — MattDMo
– MattDMo, Commented Oct 15, 2015 at 17:40
Have you seen matplotlib.org/examples/pylab_examples/axis_equal_demo.html ? In particular, note the call to axis('equal'). — Warren Weckesser
– Warren Weckesser, Commented Oct 15, 2015 at 18:02
And matplotlib.org/examples/pylab_examples/equal_aspect_ratio.html — Warren Weckesser
– Warren Weckesser, Commented Oct 15, 2015 at 18:05

Reblochon Masque · Accepted Answer · 2016-12-08 10:54:06Z

5

With 5 plots side by side, you must set the figure size to allow for enough space for your plots, and add a bit of padding between plots so the text labels of the axis of one subplot do not overlap the next plot.

import matplotlib.pyplot as plt
fig = plt.figure(figsize=(10,2))

for n in range(1, 6):
    ax = fig.add_subplot(1, 5, n)
    ax.set_aspect(1)
    plt.axis([0, 4, 0, 4])

plt.tight_layout(pad=1)

plt.show()

answered Dec 8, 2016 at 10:54

Reblochon Masque

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