Plotting Windrose: making a pollution rose with concentration set to color

Question

Trying to plot a windrose diagram with speed and direction being plotted and the concentration determining the color. Unfortunately, matplotlib only supports two variables.

Answer 1

The plots shown can be created using a pcolormesh.

import matplotlib.pyplot as plt
import numpy as np

theta = np.linspace(0,2*np.pi)
r = np.linspace(2,15,16)

Theta, R = np.meshgrid(theta, r)
C = np.sinc(Theta-2)+(5-np.sqrt(R))+np.random.rand(len(r),len(theta))
C = np.ma.masked_less_equal(C,2)

fig, ax = plt.subplots(subplot_kw={"projection":"polar"})

ax.pcolormesh(Theta, R, C, vmin=2, vmax=5)

plt.show()