Python numpy: create 2d array of values based on coordinates

Question

I have a file containing 3 columns, where the first two are coordinates (x,y) and the third is a value (z) corresponding to that position. Here\'s a short example:

Answer 1

You could try something like:

import numpy as np

x = [0, 0, 1, 1, 2, 2]
y = [1, 2, 0, 1, 1, 2]
z = [14, 17, 15, 16, 18, 13]

arr = np.zeros((3,3))
yx = zip(y,x)

for i, coord in enumerate(yx):
    arr[coord] = z[i]

print arr
>>> [[  0.  15.   0.]
     [ 14.  16.  18.]
     [ 17.   0.  13.]]