I am trying to make a 2D density plot (from some simulation data) with
matplotlib. My x and y data are defined as the log10 of some
quantities. How can I get logarithmic axes (with log minor ticks)?
Here is an exemple of my code:
import numpy as np
import matplotlib.pyplot as plt
Data = np.genfromtxt("data") # A 2-column data file
x = np.log10(Data[:,0])
y = np.log10(Data[:,1])
xmin = x.min()
xmax = x.max()
ymin = y.min()
ymax = y.max()
fig = plt.figure()
ax = fig.add_subplot(111)
hist = ax.hexbin(x,y,bins='log', gridsize=(30,30), cmap=cm.Reds)
ax.axis([xmin, xmax, ymin, ymax])
plt.savefig('plot.pdf')
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