python - taking the log of every element in a sparse matrix

Question

How can you take the log base 10 of every element in a sparse matrix (COO)?

>>print type(X)
<class 'scipy.sparse.coo.coo_matrix'>

I've tried this but it doesn't work:

import math
X.data = math.log(X.data,10)

Answer 1

使用np.log10而不是math.log10：

import numpy as np
X.data = np.log10(X.data)