一个与zeros-initialization
和使用步骤大小的切片的方式分配 -
def insert_zeros(a, N=1):
# a : Input array
# N : number of zeros to be inserted between consecutive rows and cols
out = np.zeros((N+1)*np.array(a.shape)-N,dtype=a.dtype)
out[::N+1,::N+1] = a
return out
样品试验 -
In [167]: a
Out[167]:
array([[83, 87, 19, 24],
[28, 24, 24, 77],
[26, 87, 57, 37]])
In [168]: insert_zeros(a, N=1)
Out[168]:
array([[83, 0, 87, 0, 19, 0, 24],
[ 0, 0, 0, 0, 0, 0, 0],
[28, 0, 24, 0, 24, 0, 77],
[ 0, 0, 0, 0, 0, 0, 0],
[26, 0, 87, 0, 57, 0, 37]])
In [169]: insert_zeros(a, N=2)
Out[169]:
array([[83, 0, 0, 87, 0, 0, 19, 0, 0, 24],
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[28, 0, 0, 24, 0, 0, 24, 0, 0, 77],
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[26, 0, 0, 87, 0, 0, 57, 0, 0, 37]])