Fill 2d array value in python with another 1d array per column-CodePudding

I have this code :

series =[]
list = type.groupby('level').size()

that list is equal = [20,40,40]

So, I want to have this loop:

series[0:3]=list

until here, its work but I want to have 2d matrix so I can save that list value for each loop. matrixb=np.zeros((3,15))

for i in range (15):
    matrix[0:3][i]=series[0:3]

it does not work, could not broadcast input array from shape (3,) into shape (15,)

CodePudding user response：

You can't perform such an assignment. You'd need to break them up as such:

for i in range (15):
    matrix[0][i] = series[0]
    matrix[1][i] = series[1]
    matrix[2][i] = series[2]

CodePudding user response：

the question is unclear

so you want your array to be filled using other arrays ? like this: [[20, 40, 40], [50, 60, 70]]

or you want to transform a 2d array into a 1d array? like this: [[20, 40, 40], [50, 60, 70]] => [20, 40, 40, 50, 60, 70]