I know MATLAB doesn't have a good performance in for loop computation, and I know that if some variables' size increases at each iteration of the for loop, more and more memory space will be occupied. But in my case, my purpose is to do batch processing to several data files. At the begin of the each iteration, I will clear all the variables except the for loop index (see below), but I noticed that the program turned slower and slower. Can any explain what happened and help me fix it? Thanks!
The framework of the for loop is as follow:
clear;close all;clc;
% define data ID
WTNO = [15,3,1:2,4:14,16:24];
for i = length(WTNO)
clearvars -except WTNO i
load(num2str(WTNO(i)),'.mat');
% data processing
...
% data save
...
end
Hello,
Probably you are using nested loops. You should vectorize your code.
If the size of the data is too big you should clear it after saving part of the code.
If the data processing block is too long you should divide it (saving results, clearing them and loading them step by step).
you may have Ram memory problem. It is better to clear all variable of 'WTNO(i)).mat' after you did processing and saving for each 'i'.
do you allocate memory for your data saving before you call the for loop?
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