I have a vector of real and complex number, and without using a routine i was wondering if there is a comand to find the numbers with smallest imaginary part and their index in the vector. So for example if the vector is v = [1 2 3 4+5i 6+7i 8 9+10i] the output that i want (if i want for example the 2 smallest) is
b = [4+5i 6+7i] and i = [4 5].
Something like this would do it, albeit with some better variable naming and handling of error cases.
[~, idx] = sort( nonzeros( imag( v ) ) ); imagIdx = find( imag( v ) ~= 0 );
n = 2; % The number of smallest to extract i= imagIdx( idx(1:n) );
b = v( :, i);