Hi , can anyone help me to do this , thank you

Question

mina massoud 2019-5-11

回答： madhan ravi 2019-5-11

% i have a matrix 4x32 , and i need to sum the element to obtain a matrix 4x4

clear all

clc

A= randn(4,32) ;

% (1 5 9 13 17 21 25 29) i need to take this colum and sum in row ( sum,2) so i obtain a matrix 4x1

%(2 6 10 14 18 22 26 30) i need to take this colum and sum in row ( sum,2) so i obtain a matrix 4x1

%(3 7 11 15 19 23 27 31) i need to take this colum and sum in row ( sum,2) so i obtain a matrix 4x1

%(4 8 12 16 20 24 28 32) i need to take this colum and sum in row ( sum,2) so i obtain a matrix 4x1

%to obtain at the end a matrix 4x4

% thank you

Answer 1

madhan ravi 2019-5-11

Z=permute(reshape(A.',8,4,[]),[2,1,3]);
Wanted = reshape(sum(Z,2),4,[])