Barchart with vertical labels in python/matplotlib


I'm using matplotlib to generate a (vertical) barchart. The problem is my labels are rather long. Is there any way to display them vertically, either in the bar or above it or below it?

7/20/2011 10:42:04 AM

Accepted Answer

Do you mean something like this:

>>> from matplotlib import *
>>> plot(xrange(10))
>>> yticks(xrange(10), rotation='vertical')


In general, to show any text in matplotlib with a vertical orientation, you can add the keyword rotation='vertical'.

For further options, you can look at help(matplotlib.pyplot.text)

The yticks function plots the ticks on the y axis; I am not sure whether you originally meant this or the ylabel function, but the procedure is alwasy the same, you have to add rotation='vertical'

Maybe you can also find useful the options 'verticalalignment' and 'horizontalalignment', which allows you to define how to align the text with respect to the ticks or the other elements.

8/3/2009 8:52:09 AM

In Jupyter Notebook you might use something like this

%matplotlib inline
import matplotlib.pyplot as plt
import numpy as np


or you can use:


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