The function jj_dqo(u) corresponds to j_dqo but has a matrix argument u.
It acts on the first index in the same way as j_dqo for all values of the second index.
function jj_dqo extends Icons.Function; input Real[:, :] u "array of 3- (or 2-) vectors (voltage, current)"; output Real[size(u, 1), size(u, 2)] y "array of rotated vectors (voltage, current)"; end jj_dqo;