from C_T_Sep_1 to C_T_Sep_10 they are vectors the same thing for C_A_Sep_1... C_A_Sep_10, I want to create matrix C_T_Sep and C_A_Sep and put the vector inside it, using loop

C_T_Sep_1 = importdata('C_T_Sep_1.txt') ;

C_A_Sep_1 = importdata('C_A_Sep_1.txt') ;

C_T_Sep_2 = importdata('C_T_Sep_2.txt') ;

C_A_Sep_2 = importdata('C_A_Sep_2.txt') ;

C_T_Sep_4 = importdata('C_T_Sep_4.txt') ;

C_A_Sep_4 = importdata('C_A_Sep_4.txt') ;

C_T_Sep_5 = importdata('C_T_Sep_5.txt') ;

C_A_Sep_5 = importdata('C_A_Sep_5.txt') ;

C_T_Sep_10 = importdata('C_T_Sep_10.txt') ;

C_A_Sep_10 = importdata('C_A_Sep_10.txt') ;

C_T_Sep = [C_T_Sep_1;C_T_Sep_2;C_T_Sep_4;C_T_Sep_5;C_T_Sep_10];

C_A_Sep = [C_A_Sep_1;C_A_Sep_2;C_A_Sep_4;C_A_Sep_5;C_A_Sep_10];

[Rena Berman]

(Answers Dev) Restored edit

Answer 1

[Stephen23]

Your code design makes your task much harder. By forcing meta-data into the variable names, you have forced yourself into writing slow, inefficient complex, buggy code that is difficult to debug. You make it harder to use a loop, as you request. Repeating code is also a sign that you are doing something wrong: the computer is much faster at repeatedly doing menial simple tasks, so there is no point in doing its job for it by copy-and-pasting like that.

The MATLAB approach is to use arrays and indexing, just as the MATLAB documentation shows:

https://www.mathworks.com/help/matlab/import_export/process-a-sequence-of-files.html

When you use indexing with one array, then your task is easy:

P = 'absolute or relative path to where the files are saved';
V = [1,2,4,5,10];
N = numel(V);
CT = cell(1,N); % preallocate
CA = cell(1,N); % preallocate
for k = 1:N
    FT = sprintf('C_T_Sep_%d.txt',V(k));
    FA = sprintf('C_A_Sep_%d.txt',V(k));
    CT{k} = importdata(fullfile(P,FT));
    CA{k} = importdata(fullfile(P,FA));
end
C_T_Sep = vertcat(CT{:}) % comma-separated list
C_A_Sep = vertcat(CA{:}) % comma-separated list

See also:

https://www.mathworks.com/help/matlab/matlab_prog/comma-separated-lists.html

https://www.mathworks.com/matlabcentral/answers/320713-how-to-operate-on-comma-separated-lists