home *** CD-ROM | disk | FTP | other *** search
- function y=sum4vms(x)
- %SUM Sum of the elements.
- % For vectors, SUM(X) is the sum of the elements of X.
- % For matrices, SUM(X) is a row vector with the sum over
- % each column. SUM(DIAG(X)) is the trace of X.
- %
- % See also PROD, CUMPROD, CUMSUM.
- %
- if isempty(find(isnan(x)))
- %regular sum
- y=sum(x)
- else
- [t1,t2]=size(x);
- if min(t1,t2) == 1
- y=NaN;
- else
- for i=1:t2
- if isempty(find(isnan(x(:,i))))
- y(i) = sum(x(:,i));
- else
- y(i) = NaN;
- end;
- end;
- end;
- end;