如何在matplotlib中均衡x轴和y轴的比例？

Question

I wish to draw lines on a square graph.

The scales of x-axis and y-axis should be the same.

eg x ranges from 0 to 10 and it is 10cm on the screen. y has to also range from 0 to 10 and has to be also 10 cm.

The square shape has to be maintained, even if I mess around with the window size.

Currently, my graph scales together with the window size.

How may I achieve this?

UPDATE:

I tried the following, but it did not work.

plt.xlim(-3, 3)
plt.ylim(-3, 3)
plt.axis('equal')

Answer 1

You need to dig a bit deeper into the api to do this:

from matplotlib import pyplot as plt
plt.plot(range(5))
plt.xlim(-3, 3)
plt.ylim(-3, 3)
plt.gca().set_aspect('equal', adjustable='box')
plt.draw()

doc for set_aspect

Answer 2

plt.axis('scaled')

对我来说效果很好。

Answer 3

See the documentation on plt.axis() . This:

plt.axis('equal')

doesn't work because it changes the limits of the axis to make circles appear circular. What you want is:

plt.axis('square')

This creates a square plot with equal axes.

Answer 4

Try something like:

import pylab as p
p.plot(x,y)
p.axis('equal')
p.show()

Answer 5

您可以使用此将绘图拉伸为正方形：

fig = plt.figure(figsize=(1, 1))