Error in using try catch

Hi All

I have a loop to be forced to continue , and I get an error after the first cycle , since in the beginning of each try I put

clear all  and,  close all

cause I need to remove the data from the previous run, but this also removes the counter j in the loop. if I don't do that the previous data will interfer with the next

how do I do that ?

Answer 1

[Adam Danz]

In general you should avoid using clear all (see link and image below). You're throwing the baby out with the bathwater.

If you need to remove data within a loop, you can either reset the variables with preallocation (see method 1), empty the variables (see method 2 below) or clear a list of variables in a controlled manner (see method 3).

% 1) reset the variables with preallocation
% Recommended method 
for i = 1:n
    myMat = nan(1,n);   % a vector of NaNs
    myCell = cell(1,n); 
    ...
end

% 2) empty the variables. 
for i = 1:n
    myMat = []; 
    myCell = {}; 
    myStruc = struct(); 
    ...
end

% 3) clear a hard coded list of variables
vars2clear = {'myMat','myCell','myStruc'}; 
for i = 1:n
    clear(vars2clear{:})
    ...
end