MATLAB: Finding index to a vector in structure

structures

Consider the following example:
f = struct
f(1).x = 5;
f(2).x = 1:10;
f(3).x = 1;
f(4).x = 2;
I wish to find an automated way of finding which element of the field x is a vector. In the example above, the answer is element 2. Thank you!

Best Answer

I could not figure out a vectorize way to do this, but perhaps this loop is good enough:
n = size(f,2);
isVectorF = false(1,n);
for nv = 1:n,
  isVectorF(nv) = not(isscalar(f(nv).x));
end
isVectorF is a logical with 0 = scalar and 1 = vector.
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