return_to_cython.pyx

#translate the pointer to a numpy array 
magnitude_array = np.asarray(magnitude)

#reshape the magnitude_array so we'll have a matrix
cols = int( (length/(windowSize/2)) -1)
rows = int(windowSize/2)+1

new_array = np.zeros([cols,rows])
counter = 0
for i in range(0,cols):
    for j in range(0,rows):
        new_array[i][j] = magnitude_array[counter]
        counter+=1

return  new_array