[Matplotlib-users] missing ticks on inverted log axis

[gaspra <ye...@gm...>]

Hi, I am having troubles to correctly make a figure with inverted log axis.
This is what I am doing:

import numpy as np
import matplotlib.pyplot as plt

y=np.linspace(-90,90,20)
z=np.arange(1,1.e4, 200)

c=y.reshape(20,1)*z.reshape(1,len(z))

fig,ax=plt.subplots()
plt.pcolor(y,z,c.transpose())
ax.set_yscale('log')
ax.invert_yaxis()

The problem is that the ticks of y axis is not displayed correctly once I
invert the y axis. It shows the tick at 1000. All other ticks such as 100,
10 and 1 are missing.  Am I doing something wrong or is this a bug in
matplotlib?

Thanks for your help.





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