How to import to Matlab many text files as table type

I have about 30 .txt files and I need to plot the data of each files using Matlab. I don't know how to import each of them as a table type (using the readtable function, maybe), solving this problem would help me for creating a loop that allows me to plot each imported file (I also don't have idea how to create this loop, in order to select each imported table).

[KSSV]

Are all the files of same format? Tell us about text file format. If all the files are of same format, attach one file here.

[Stephen23]

https://www.mathworks.com/help/matlab/import_export/process-a-sequence-of-files.html

[José Fonseca]

All the files are the same, they are txt files

[Sindar]

Beyond the file extension, do they all store the data in the same way? Number and order of columns, data types, delimeters

[José Fonseca]

Sindar No, all of them are numeric values, but they can have different numer of rows and columns

Answer 1

[Walter Roberson]

projectdir = 'directory the files are in';
dinfo = dir(fullfile(projectdir, '*.txt'));   %use appropriate extension
filenames = fullfile(projectdir, {dinfo.name});
nfiles = length(filenames);
tables = cell(nfiles,1);

for K = 1 : nfiles
    tables{K} = readtable(filenames{K});
    %you could plot tables{K} here
end


%or you could plot elements of tables here

for K = 1 : nfiles
    thisfile = filenames{K};
    [~, basename, ~] = fileparts(thisfile);
    plot(tables{K}.Time, tables{K}.Resistance, 'Displayname', basename);
    hold on
end
hold off
legend show

[Sindar]

Since the number of columns might vary, the only thing I'd add is that this will plot all later columns against the first:

plot(tables{K}{:,1}, tables{K}{:,2:end}), 'Displayname', basename);

[Walter Roberson]

True. Unfortunately the legend will not be all that useful in that situation.