I have data in X, Y, Z format where all are 1D arrays, and Z is the amplitude of the measurement at coordinate (X,Y). I'd like to show this data as a contour or 'imshow' plot where the contours/color represent the the value Z (amplitude).
The grid for measurements and X and Y look are irregularly spaced.
Many thanks,
len(X)=100
len(Y)=100
len(Z)=100
Does plt.tricontourf(x,y,z)
satisfy your requirements?
It will plot filled contours for irregularly spaced data (non-rectilinear grid).
You might also want to look into plt.tripcolor()
.
import numpy as np
import matplotlib.pyplot as plt
x = np.random.rand(100)
y = np.random.rand(100)
z = np.sin(x)+np.cos(y)
f, ax = plt.subplots(1,2, sharex=True, sharey=True)
ax[0].tripcolor(x,y,z)
ax[1].tricontourf(x,y,z, 20) # choose 20 contour levels, just to show how good its interpolation is
ax[1].plot(x,y, 'ko ')
ax[0].plot(x,y, 'ko ')
plt.savefig('test.png')