MATLAB: I want write in matrix using for loop but the loop give me the last run data

Question

 A = [];
 for i = 1:10
    A=ecg_raw_channels(LP_i_raw(i):LT_i_raw(i));
 end

Answer 1

It depends if the size of the output is same every time inside the loop. If not better to use a cell.

A = cell(1,10);
 for i = 1:10
    A{i}=ecg_raw_channels(LP_i_raw(i):LT_i_raw(i));
 end

If the output is same always...with specified numbers say n

N = 10 ;  % say inside loop length is 10 
A = zeros(10,10);
 for i = 1:10
    A(i,:)=ecg_raw_channels(LP_i_raw(i):LT_i_raw(i));
 end