Re: [Gretl-users] Orthonormal matrix

Am 15.03.2019 um 12:35 schrieb Olasehinde Timmy: > illustrative purposes using vecm output, let α = {-0.3;0.4}, and β = > {1,2.2}, how can I compute the orthonormals for this two matrices. > Because, I tried using the nullspace command in gretl, but I keep > getting empty space matrix. You have to use the transpose: a = {-0.3;0.4} eval nullspace(a') This is due to the convention used that A*nullspace(A) should be zero, as opposed to A'nullspace(A). Equivalently as stated in the documentation: "...except when A has full column rank, in which case an empty matrix is returned." (BTW, the most common name for this is "orthogonal complement" AFAIK.) cheers sven _______________________________________________ Gretl-users mailing list Gretl-users(a)lists.wfu.edu http://lists.wfu.edu/mailman/listinfo/gretl-users