You can try using something like this.
[Names,Paths]=uigetfile('*.mat','MultiSelect','on');
entirefile =fullfile(Paths,Names); %entirefile is now a cell array containing the path of all your files
average=zeros(numel(entirefile),1); %initialise an array of 0's
for i=1:numel(entirefile) %automatically repeats the sequence a number of times equal to the number of files you picked
tempdata=load(entirefile{i}); %use curly brackets when indexing cells :)
average(i)=callyourfunction(tempdata);
end
Overview=table(Names',average); %Names is a row vector, so add the ' to turn it into a column.
%Now you should have a table showing you the data file name and its corresponding average value.
