I'd like to know how to calculate the factorial of a matrix elementwise. For example,
import numpy as np
mat = np.array([[1,2,3],[2,3,4]])
np.the_function_i_want(mat)
would give a matrix mat2
such that mat2[i,j] = mat[i,j]!
. I've tried something like
np.fromfunction(lambda i,j: np.math.factorial(mat[i,j]))
but it passes the entire matrix as argument for np.math.factorial
. I've also tried to use scipy.vectorize
but for matrices larger than 10x10 I get an error. This is the code I wrote:
import scipy as sp
javi = sp.fromfunction(lambda i,j: i+j, (15,15))
fact = sp.vectorize(sp.math.factorial)
fact(javi)
OverflowError: Python int too large to convert to C long
Such an integer number would be greater than 2e9, so I don't understand what this means.
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