d=dir('results*.mat); % get the list of .mat files qualifying...
N=length(d); % how many files are there...
nCol=3; % the desired column (3 for example, change at will)
matobj=matfile(d(1).name); % make matfile object for first file
nRow=size(matobj.results,1); % number rows in file results variable
newmat=zeros(nRow,N); % preallocate newmat to hold all columns
newmat(:,1)=matobj.results(:,nCol); % save first column
clear matobj % done with the object now have data
for i=2:length(d) % iterate over the rest files found
matobj=matfile(d(i).name); % make matfile object each file in turn
newmat(:,i)=matobj.results(:,nCol); % each column in turn from the file
clear matobj % done with the object now have data
end
save newmat newmat % save the newmat array in newmat.mat file
Change variable names as desired, of course. The above assumes each file RESULTSn.MAT was saved from a variable named 'results'; if that's not correct, fix up the script to use the proper name.
doc matfile % for details
has section in example showing how to query the variable name(s) and use dynamic names it need be.
Also, the above presumes and requires that each vector is the same length in order to be able to concatenate into a double array.
