--- loncom/html/adm/help/tex/Spreadsheet_Functions.tex 2003/08/29 21:08:40 1.4 +++ loncom/html/adm/help/tex/Spreadsheet_Functions.tex 2010/08/23 16:16:18 1.9 @@ -1,6 +1,6 @@ \label{Spreadsheet_Functions} The following special functions are available in the spreadsheet. -Please see \textbf{Referencing Cells} (\ref{Spreadsheet_Referencing_Cells}) +Please see Referencing Cells (\ref{Spreadsheet_Referencing_Cells}) for information on specifying cells and ranges. \begin{itemize} @@ -32,17 +32,52 @@ for information on specifying cells and range \index{MIN} -\item \texttt{\&SUMMAX(n ,range)} - sum of the maximum n non-empty +\item \texttt{\&SUMMAX(n ,range)} - sum of the maximum $n$ non-empty cells in range \index{SUMMAX} -\item \texttt{\&SUMMIN(n, range)} - sum of the minimum n non-empty +\item \texttt{\&SUMMIN(n, range)} - sum of the minimum $n$ non-empty 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 \texttt{\&EXT('system.time')} to retrieve the current time. \index{EXT} +\item \texttt{\&PARM(parameter)} - get the value of a specific parameter +\index{PARM} + +\item \texttt{\&MINPARM(expression)} - get the value of a parameter that +matches the expression that is the smallest in value (If one specified +'opendate' it would return the smallest opendate set on the problem.) +\index{MINPARM} + +\item \texttt{\&MAXPARM(expression)} - get the value of a parameter that +matches the expression that is the largest in value (If one specified +'opendate' it would return the largest opendate set on the problem.) +\index{MAXPARM} + +\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 \texttt{all} can be used to sum over all sequences. Regular expressions +can be entered as well, if prefixed by \texttt{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.