\section{UPPER Convert strings to upper case}

\subsection{Usage}

The \verb|upper| function converts a string to upper case with
the syntax
\begin{verbatim}
   y = upper(x)
\end{verbatim}
where \verb|x| is a string, in which case all of the lower case
characters in \verb|x| (defined as the range \verb|'a'-'z'|) are
converted to upper case.  Alternately, you can call \verb|upper|
with a cell array of strings
\begin{verbatim}
   y = upper(c)
\end{verbatim}
in which case each string in the cell array is converted to upper case.
\subsection{Example}

A simple example:
\begin{verbatim}
--> upper('this Is Strange CAPitalizaTion')

ans = 

 THIS IS STRANGE CAPITALIZATION


\end{verbatim}
and a more complex example with a cell array of strings
\begin{verbatim}
--> upper({'This','Is','Strange','CAPitalizaTion'})

ans = 

 ['THIS']   ['IS']   ['STRANGE']   ['CAPITALIZATION']   


\end{verbatim}
