Changing the count of numbers of the y-axis (Python, matplotlib.pyplot)

Question

I just have a small problem with pyplot.

I am plotting my data in a way like:

import matplotlib.pyplot as plt

plt.subplot(i,3,j)
plt.plot(xy.data)
plt.show()

With several subplots. Now my problem is: When I have many subplots, the plots become very small and espacially flat. So the numbers that are on my y-axis become impossible to read, cause they overlap each other.

Is it somehow easily possible to change the count of the numbers to something like 3? So I just have the maximum, zero and the minimum? But not the minimum of my function, I would rather keep the minimum (and max) that is currently there. So I just would like to let every step inbetween the current min, 0 and max away.

Thank You all, have a nice day.

Answer 1

from matplotlib.ticker import MaxNLocator
plt.gca().yaxis.set_major_locator(MaxNLocator(3))

MaxNLocator sets the amount of ticks, and with the plt.gca().yaxis you make this happen on the y-axis.