[Matplotlib-users] histogran2d and polar axis

[David C. <dcd...@gm...>]

Hi,
This one has been driving me crazy all day. I have three vectors, 
azimuth, frequency and power, which I would like to histogram and plot 
on a polar axis. I can plot a scatter plot this way no problem but the 
histogram gets messed up somehow. An example is below, anybody know how 
to do this properly??

import random
import numpy as np
import matplotlib.pyplot as plt

baz = np.zeros((20))
freq = np.zeros((20))
pwr = np.zeros((20))
for x in range(20):
     baz[x] = random.randint(20,25)*10
     freq[x] = random.randint(1,10)*10
     pwr[x] = random.randint(-10,-1)*10

baz = baz*np.pi/180.

abins = np.linspace(0,2*np.pi,360)
sbins = np.linspace(1, 100)

H, xedges, yedges = np.histogram2d(baz, freq, bins=(abins,sbins), 
weights=pwr)

plt.figure(figsize=(14,14))
plt.subplot(111, polar=True)
#plt.scatter(baz, freq, c=pwr)
plt.pcolormesh(H)
plt.show()
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