function c = vertcat(a, b)% VERTCAT concatenate two probdist_alpha objects vertically%% Arrays of probdist_alphas are made by composing such arrays of respective% expectations and variances.% Copyright (C) 1999-2000 Antti Honkela, Harri Valpola,% and Xavier Giannakopoulos.%% This package comes with ABSOLUTELY NO WARRANTY; for details% see License.txt in the program package.  This is free software,% and you are welcome to redistribute it under certain conditions;% see License.txt for details.if(nargin == 1)  c = a;else  c = probdist_alpha([get(a, 'E'); get(b, 'E')], ...		     [get(a, 'Var'); get(b, 'Var')], ...		     [a.malpha; b.malpha], [a.valpha; b.valpha], ...		     [a.msign; b.msign], [a.vsign; b.vsign]);end