read data from variables with names matching patterns

A student of mine saved a .mat file containing variables named x1, x2, ..., x50, y1, y2, etc. How can I write program that will open the .mat file, and loop through each of these pairs of data. Somehow it involves "who" but I'm not seeing how to make it work.

[Roy Goodman]

answer to my own question: use the "eval" command.

[dpb]

The better answer is to teach the student "don't do that" --

http://matlab.wikia.com/wiki/FAQ#Why_is_it_advised_to_avoid_using_the_.22eval.22_function.3F

http://www.mathworks.com/help/matlab/matlab_prog/string-evaluation.html

Answer 1

[Jos (10584)]

X = load('StudentsMatfile.mat') ;
LABELS = fieldnames(X) ;
N = numel(LABELS)
DATA = cell(N,1)
for k=1:N
   DATA{k} = X.(LABELS{k}) ;
end
save ('SupervisorMatfile.mat', 'DATA','LABELS') ;