check if the destination file is the same as what I want

Hi!

I have a folder inside which there are multiple .mat files. I want to perform an operation such that I get the plots of only 2 specific .mat files. For example,

The path that contains the .mat files are -- 'C:\ParentFolder\Folder\Subfolder\*.mat'

Now I want to perform an operation like -- *.mat == a.mat.

All this will be done in a for loop as I have to do this step for many files (in different folders).

How do I proceed?

Answer 1

[Florian Bidaud]

I guess you can use isfile to check if the matlab file you need is somewhere in the folder.

Like

if isfile(a.mat)
    my_file = a.mat
end

If you want to put all your files in an array:

file_name_array = {'file1' 'file2' 'file3'};
path = 'C:\folder'
for i = 1:length(file_name_array)
    if isfile(fullfile(path,file_name_array{1}))
        files.(file_name_array{1}) = load(fullfile(path,file_name_array{1}));
    else
        disp([file_name_array ' does not exist'])
    end
end

Answer 2

[Mayur]

Hi Indrani!

You can use the dir function to get a list of all .mat files in the specified folder, and then loop over this list to load and plot the data from the desired files.

folder = 'C:\ParentFolder\Folder\Subfolder\';
fileList = dir(fullfile(folder, '*.mat'));
for i = 1:length(fileList)
    filename = fileList(i).name;
    if strcmp(filename, 'a.mat') || strcmp(filename, 'b.mat')
        data = load(fullfile(folder, filename));
        % Remaining code
    end
end

You can read more about dir and fullfile from the following documentations:

https://www.mathworks.com/help/matlab/ref/dir.html

https://www.mathworks.com/help/matlab/ref/fullfile.html