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

Asked by mina massoud on 11 May 2019
Latest activity Answered by madhan ravi
on 11 May 2019
% 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

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1 Answer

Answer by madhan ravi
on 11 May 2019
 Accepted Answer

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

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