Import several csv and modify the data

I need to import several csv files generated by a data analysis tool. The files have several columns and do not all have the same number of rows. After importing them I need to perform some calculations, also adding new columns. Then I have to select a part of the data, for example using logical indexing. For now I do this:

%Folder with all the csv data to read
Folder   = 'MyFolder';
FileList = dir(fullfile(Folder, '**', '*.csv'));

% Import of all the data contained in thefolder
for iFile = 1:length(FileList)
    thisFolder = FileList(iFile).folder;
    thisFile   = FileList(iFile).name;
    File       = fullfile(thisFolder, thisFile);
    
    opts=detectImportOptions(File);
    opts.VariableNamesLine = 2; % Row containing variables name
    opts.DataLines = 6; % Number row to omit during data read, first data (t=0) will not be read)
    opts.Delimiter =','; %Specifies that the data is comma seperated    
    
    Comp_tables{iFile} = readtable(File,opts, 'ReadVariableNames', true);

end

Now my problem is that the csv are saved in tables that are stored in a cell array, so for further processing I'm doing this:

for i = 1:length(Comp_tables)
    
   t = Comp_tables{i};  % Extract table from cells array
    
   t.Kraft = max(0, t.Kraft); % Substitution of negative value with zeros
   t.Stress = max(0, t.Stress); % Substitution of negative value with zeros
    
   Comp_tables{i} = t; % Save tables in cells array back
end

Is just an example, I would need to perform much more calculation. The problem is that I don't know which table which sample is since I can't change its name, I would like the table to have the same name as the csv file. Also I'm not sure if extracting files from cells array and then reinserting them afterwards is a good idea. It does make the job easier though since you can automate the calculations on all the tables.

Would there perhaps be a cleaner way to save the csvs, do some calculations, and finally have access to the data to be able to plot?

I have attached two files that I'm using.

[Siddharth Bhutiya]

Since you want to do the same operations on all your tables, storing them in a cell array like this seems like the right thing to do. Unfortunately since the tables are not in the cell array, you cannot really name them. One way to preserve that information could be to store the name of the csv file in table's Description property. Although this information would not be visible when you display your table itself, you can still programatically access and check it by doing t.Properties.Description.

>> t.Properties.Description = 'myfile1.csv';
>> t.Properties

ans = 

  TableProperties with properties:

             Description: 'myfile1.csv'
                UserData: []
          DimensionNames: {'Row'  'Variables'}
           VariableNames: {'Var1'  'Var2'  'Var3'}
    VariableDescriptions: {}
           VariableUnits: {}
      VariableContinuity: []
                RowNames: {}
        CustomProperties: No custom properties are set.
      Use addprop and rmprop to modify CustomProperties.

[Gioele]

Thank you very much!