--- loncom/html/adm/help/tex/Spreadsheet_Functions.tex 2002/07/29 14:51:43 1.3
+++ loncom/html/adm/help/tex/Spreadsheet_Functions.tex 2010/08/23 16:16:18 1.9
@@ -1,5 +1,7 @@
\label{Spreadsheet_Functions}
-The following functions are available in the spreadsheet:
+The following special functions are available in the spreadsheet.
+Please see Referencing Cells (\ref{Spreadsheet_Referencing_Cells})
+for information on specifying cells and ranges.
\begin{itemize}
@@ -30,19 +32,52 @@ The following functions are available in
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, non-IO Perl functions work in cells, which is internally
-evaluated within a safe space. Field names and Column-Row combinations
-can be used as variables.
\ No newline at end of file
+In addition, most non-IO Perl functions work in cells.