Hey this is a quick and easy question... How would i find the minimum value of this matrix, excluding 0? As in, 8
arr = numpy.array([[ 0., 56., 20., 44.],
[ 68., 0., 56., 8.],
[ 32., 56., 0., 44.],
[ 68., 20., 56., 0.]])
As you're using numpy, you could use
arr[arr>0].min()
for the case you posted. but if your array could have negative values, then you should use
arr[arr != 0].min()
来源：https://stackoverflow.com/questions/11764260/how-to-find-the-minimum-value-in-a-numpy-matrix