How to 'cat' my dataset?

I have .mat files in a folder, each of them is the same size 1x500, what i want to do is to create a table where the first element will be the file name(without the mat) and the second being the loaded data file so we'll end up having an nx2 matrix n being the number of files in the folder, what i tried:

full_val = 1;
path_directory='C:\Users\me\Desktop\test_data';
original_files=dir([path_directory '/*.mat']);
for k=1:length(original_files)
    filename=[path_directory '/' original_files(k).name];
    original_files(k).name = strtok(original_files(k).name, '.mat');
    disp(original_files(k).name)
    data_line = load(filename);
    full_val = cat(1,full_val,filename);

end

but i get this error Error using cat Dimensions of matrices being concatenated are not consistent which makes sense but i have hundreds of file i can't write their names manually and load each individually how to adjust my code for the task?

Answer 1

[Walter Roberson]

You load the data into the struct data_line, but yu do not save the loaded structure. Instead, you cat(1) something that starts out as the numeric value 1, together with something that is a character vector that is the file name.

Try

full_val = 1;
path_directory='C:\Users\me\Desktop\test_data';
original_files=dir([path_directory '/*.mat']);
nfiles = length(original_files);
full_val = cell(nfiles, 2);

for k=1:length(original_files)
    filename=[path_directory '/' original_files(k).name];
    original_files(k).name = strtok(original_files(k).name, '.mat');
    disp(original_files(k).name)
    data_line = load(filename);
    full_val(k, :) = {filename, data_line};
end

Though what I suspect you would want would be

   fn = fieldnames(data_line);
   full_val(k, :) = {filename, data_line.(fn{1})};

This extracts the first variable's value out of the loaded file.

[Elias Unk]

How can i print a table's element in matlab, in puython i'd jsut do print(full_val[0][0]) here it should be something like disp(full_val[0][0]) but it's not working

[Elias Unk]

I figured it out somewhat like full_val(2,2) but when i do that it's giving me [1x1 struct] is that the right way or it should give the values in .mat for that file.

[Walter Roberson]

full_val{2,2}

This will show a struct unless you use the variation I show with fieldnames.