Brian Brian - 1 month ago 33
Python Question

How to have logarithmic bins in a Python histogram

As far as I know the option Log=True in the histogram function only refers to the y-axis.

P.hist(d,bins=50,log=True,alpha=0.5,color='b',histtype='step')


I need the bins to be equally spaced in log10. Is there something that can do this?

Answer

use logspace() to create a geometric sequence, and pass it to bins parameter. And set the scale of xaxis to log scale.

import pylab as pl
import numpy as np

data = np.random.normal(size=10000)
pl.hist(data, bins=np.logspace(0.1, 1.0, 50))
pl.gca().set_xscale("log")
pl.show()

enter image description here