MATLAB: How to Combine Several Variables Into One Matrix

for loopsMATLAB

Hello,
I have several variables, all saved as individuals, that I am processing. Each variable has one column of data in varying lengths. These are loaded into Matlab with a for loop, so as to automate the processing. I want to combine all of this data into a one-column matrix. I also eventually want to calculate standard deviation and the mean itself from the created matrix. How would I accomplish this?
Here's an example:
A =
     3
     4
     5
B =
     5
     6
     7
     8
C =
     3
     2
I want to combine A, B, and C into a matrix, D, that would look like this:
D =
     3
     4
     5
     5
     6
     7
     8
     3
     2
and then eventually average them so
E = mean(D)
and
F = std(D)
Please keep in mind that these variables are all saved separately. I don't know if that makes a difference (I'm kind of a newb) but if it does, please keep that in mind.
Thanks!!!

Best Answer

In your for loop, the easiest way might be something like this:
D = [];
for k1 = 1: ...
    v{k1} = load( ... );
    D = [D; v{k1}];
end
This creates ‘D’ as part of the variable loading loop, so you have it when you have loaded all your variables. Your variables also exist without modification in the ‘v’ cell array.
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