--- loncom/html/adm/help/tex/Spreadsheet_Functions.tex 2003/08/29 21:08:40 1.4 +++ loncom/html/adm/help/tex/Spreadsheet_Functions.tex 2003/10/03 18:20:26 1.6 @@ -40,9 +40,31 @@ for information on specifying cells and cells in range \index{SUMMIN} -\item \texttt{\&EXT(expression)} - access to EXT function in lonnet +\item \texttt{\&EXT(expression)} - access to EXT function in lonnet. +Use &EXT(``system.time'') to retrieve the current time. \index{EXT} +\item \texttt{\&SUMSEQ(column,sequence1,sequence2,sequence3,...)} - +sum the given column across the folders or sequences listed. + +When specifying a sequence use the full title. Instead of a sequence title +the word ``all'' can be used to sum over all sequences. Regular expressions +can be entered as well, if prefixed by ``regexp:''. See below for examples. + +\begin{itemize} + +\item \texttt{\&SUMSEQ(``Z'',''Chapter 1'');} + +\item \texttt{\&SUMSEQ(``Z'',''Chapter 1'',''Chapter 2'',''Chapter 3'');} + +\item \texttt{\&SUMSEQ(``Z'',''all'');} - sum over all sequences. + +\item \texttt{\&SUMSEQ(``Z'',''regexp:Large Biomolecules'');} - + sum over all sequences which match the regular expression +/Large Biomolecules/. + +\end{itemize} + \end{itemize} In addition, most non-IO Perl functions work in cells.