\Header{mat.or.vec}{Create a Matrix or a Vector}
\keyword{array}{mat.or.vec}
\begin{Usage}
\begin{verbatim}
mat.or.vec(nr, nc)
\end{verbatim}
\end{Usage}
\begin{Description}
\texttt{mat.or.vec} creates an \texttt{nr} by \texttt{nc} zero matrix if
\texttt{nc} is greater than 1, and a zero vector of length \texttt{nr} if
\texttt{nc} equals 1.\end{Description}
\begin{Examples}
\begin{ExampleCode}
mat.or.vec(3, 1)
mat.or.vec(3, 2)
\end{ExampleCode}
\end{Examples}

