Daniel@0: % column sum
Daniel@0: % function Z=csum(X)
Daniel@0: 
Daniel@0: function Z=csum(X)
Daniel@0: 
Daniel@0: N=length(X(:,1));
Daniel@0: if (N>1)
Daniel@0:   Z=sum(X);
Daniel@0: else
Daniel@0:   Z=X;
Daniel@0: end;