Sequential variables with for loop matlab

Question

I have a 42 variables of same length and in sequence

e.g. d_reshaped1 to d_reshaped42.

Each variable has 3 rows with 42 elements. I would like to combine all the first rows in each of the 42 variables to a single 42 by 42 matrix but my dynamic programming skills in Matlab are miserable.

Can someone assist?

Please consider seriously to define a cell array of size 42, or better yet a 3D array of size 3x42x42 to accomodate all your variables. That will make life easier :-) — Luis Mendo
– Luis Mendo, Commented Jan 3, 2014 at 20:17
It will but my question is how do i assign the variables into the 3D cell array in a loop? — Tinashe Mutsvangwa
– Tinashe Mutsvangwa, Commented Jan 3, 2014 at 20:23

Luis Mendo · Accepted Answer · 2014-01-03 21:16:52Z

1

If you really have those variables, you need to use eval, which is generally not advised:

result = NaN(42,42);
for k = 1:42
    eval(['result(k,:) = d_reshape' num2str(k) '(1,:)'])
end

You should consider using a higher-order structure to store all those variables together, such as a cell array or a 3D array.

edited Jan 3, 2014 at 21:16

answered Jan 3, 2014 at 20:23

Luis Mendo

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1 Comment

Tinashe Mutsvangwa Over a year ago

Thanks very much. Not recommended but I really need to get past this problem ASAP.

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