yticklabels only at major ticks matplotlib

Question

I have a problem regarding yticklabels in matplotlib.

I' m trying to make a vertical barplot (plt.barh) and then trying to use ax.set_yticklabels command. The problem that I have is that it only puts the labels at the major ticks! The list that I'm passing is of length 18, however it only labels 10 of the bars!!

Help please?

Answer 1

you need to set yticks before you set yticklabels:

from numpy import *
import matplotlib.pyplot as plt

fig = plt.figure()

ax = fig.add_subplot(111)
x=random.uniform(0,5,size=5)

#plot
ax.barh(arange(len(x)),x,1)

#set ticks
T=arange(len(x))+0.5
ax.set_yticks(T)

#set labels
labels=['a','b','c','d','e']
ax.set_yticklabels(labels)

plt.show()

Answer 2

You can use set_yticks, but passing the argument minor True or False:

majorticks = [1., 2., 3.]
minorticks = [1.5, 2.5]
ax.set_yticks( minorticks, minor=True )
ax.set_yticks( majorticks, minor=False ) # The default in version 1.3.0

The same works for set_yticklabels...