multiply elements in array list by vector using loops-CodePudding

list_of_arrays = [a,[split[12]]]
a = np.array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2000, 0 ,0])
resultnew = []
output = a
for i in list_of_arrays[1:]:
    output = output@i        
    resultnew.append(output)

I need help I am trying to multiply a by an array list containing 50 16x16 matrices.Example starting from split[12] (the 13th matrix in the list) , multiplied by a, and then taking the result and multiplying it by split[13], continuing until split[50] is reached.I need the output appended for each iterration.

CodePudding user response：

Maybe you are using an older version of numpy that doesn't support the @ (matmul) operator, which leads to the error. Or maybe your arrays are somehow python objects, not numbers (you don't show enough code for me to guess why).

If your numpy versions supports @, the following should work:

output = a
for arr in split[12:51]:
    output = output@arr
    resultnew.append(output)

If not, you could explicitly use matmul:

output = np.matmul(output, arr)