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How can I use a for loop to name multiple variables?

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Jennifer
Jennifer 2011-3-26
I have data for a range of walking and running speeds, and the number of speeds changes for each subject. Currently I have something like this, where the "_1" after "Head" and the number after "Walk" refers to the speed:
Head_1 = Walk1(:,1:eaVar); Head_2 = Walk2(:,1:eaVar); Head_3 = Walk3(:,1:eaVar);
Is there a way to put the speed number in a loop to shorten the code? The number of speeds varies from 7 to 22. I need each speed to be in its own matrix.
Many thanks.

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Matt Tearle
Matt Tearle 2011-3-26
Obligatory answer: don't. In your case, a 3-D array is probably the best option.
But if you have no option (because the Walk variables already have a number in them), use num2str to make a string to represent the command, including the variable name, then eval to evaluate that command. Something like
str = ['Head(:,:,k) = Walk',num2str(k),'(:,1:eaVar);'];
eval(str);

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