Barchart with vertical labels in python/matplotlib

phihag picture phihag · Aug 3, 2009 · Viewed 90.7k times · Source

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?

Answer

dalloliogm picture dalloliogm · Aug 3, 2009

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.