Clear Filters
Clear Filters

How do I add to a structure in a for loop?

77 views (last 30 days)
I have a bunch of matlab variable files in a directory that I want to load into one structure for analysis on later. Right now I can get the file to load into the structure but it gets replaced when the for loop starts over. It might be something simple I'm overlooking; I just don't use MATLAB often.
files = dir('*.mat');
for i=1:length(files)
S=load(files(i).name,"-mat");
end

Accepted Answer

Stephen23
Stephen23 on 21 Mar 2023
Edited: Stephen23 on 21 Mar 2023
Rather than creating another variable, simply store the imported data in the same structure that you are already using. I also improved your code by using a path to the files, so the data files can be saved anywhere.
P = '.'; % absolute or relative path to where the MAT files are saved.
S = dir(fullfile(P,'*.mat')); % this returns a structure array, so why not use it?
for k = 1:numel(S)
F = fullfile(P,S(k).name);
S(k).data = load(F,"-mat");
end
S = [S.data] % optional concatenation, assumes compatible structure fields.

More Answers (1)

Cameron
Cameron on 21 Mar 2023
Edited: Cameron on 21 Mar 2023
files = dir('*.mat');
for i=1:length(files)
S{i,1}=load(files(i).name,"-mat");
end

Categories

Find more on Structures in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!