Hello, I would like to know how to make MATLAB return the smallest, positive, purely real value from a column matrix of length n which may contain complex and negative numbers.
So I already know how to get the length of the column matrix. In my case, the column matrix, (Uf), is made from the roots of a polynomial called T3. i.e.
The polynomial, T3, is made up of convolutes of other polynomials which I have written in matrix form. If I input certain values for those smaller polynomials, the following function will not return the smallest positive value, and doesn't even know what the variable U_flutter is.
i = 1;
j = 0;
while i<=length(Uf);
notcomplex = isreal(Uf(i,1));
if notcomplex == 1 && Uf(i,1)>=0;
Ufl = Uf(i,1);
if Ufl < j;
U_flutter = Ufl;
else
j = Ufl;
end
else
if Uf(i,1)>0
U_flutter = j;
end
end
i = i + 1;
end
Thanks!
