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Annotation of loncom/html/adm/help/tex/Spreadsheet_Functions.tex, revision 1.7

1.2       bowersj2    1: \label{Spreadsheet_Functions}
1.4       matthew     2: The following special functions are available in the spreadsheet.
                      3: Please see \textbf{Referencing Cells} (\ref{Spreadsheet_Referencing_Cells})
                      4: for information on specifying cells and ranges.
1.1       bowersj2    5: 
                      6: \begin{itemize}
                      7: 
                      8: \item \texttt{\&NUM(range)} - number of non-empty cells in range
1.3       bowersj2    9: \index{NUM}
1.1       bowersj2   10: 
                     11: \item \texttt{\&BIN(low, high, range)} - number of non-empty cells in
                     12:   range with values between low and high
1.3       bowersj2   13: \index{BIN}
1.1       bowersj2   14: 
                     15: \item \texttt{\&SUM(range)} - sum of the non-empty cells in range
1.3       bowersj2   16: \index{SUM}
1.1       bowersj2   17: 
                     18: \item \texttt{\&MEAN(range)} - mean value of non-empty cells in range
1.3       bowersj2   19: \index{MEAN}
1.1       bowersj2   20: 
                     21: \item \texttt{\&STDDEV(range)} - standard deviation of non-empty cells
                     22:   in range 
1.3       bowersj2   23: \index{STDDEV}
1.1       bowersj2   24: 
                     25: \item \texttt{\&PROD(range)} - product of non-empty cells in range
1.3       bowersj2   26: \index{PROD}
1.1       bowersj2   27: 
                     28: \item \texttt{\&MAX(range)} - maximum value of non-empty cell in range
1.3       bowersj2   29: \index{MAX}
1.1       bowersj2   30: 
                     31: \item \texttt{\&MIN(range)} - minimum value of non-empty cells in
                     32:   range 
1.3       bowersj2   33: \index{MIN}
1.1       bowersj2   34: 
                     35: \item \texttt{\&SUMMAX(n ,range)} - sum of the maximum n non-empty
                     36:   cells in range
1.3       bowersj2   37: \index{SUMMAX}
1.1       bowersj2   38: 
                     39: \item \texttt{\&SUMMIN(n, range)} - sum of the minimum n non-empty
                     40:   cells in range
1.3       bowersj2   41: \index{SUMMIN}
1.1       bowersj2   42: 
1.6       matthew    43: \item \texttt{\&EXT(expression)} - access to EXT function in lonnet.
1.7     ! www        44: Use \&EXT(``system.time'') to retrieve the current time.
1.3       bowersj2   45: \index{EXT}
1.1       bowersj2   46: 
1.5       matthew    47: \item \texttt{\&SUMSEQ(column,sequence1,sequence2,sequence3,...)} -
                     48: sum the given column across the folders or sequences listed.  
                     49: 
                     50: When specifying a sequence use the full title.  Instead of a sequence title
                     51: the word ``all'' can be used to sum over all sequences.  Regular expressions
                     52: can be entered as well, if prefixed by ``regexp:''.  See below for examples.
                     53: 
                     54: \begin{itemize}
                     55: 
                     56: \item \texttt{\&SUMSEQ(``Z'',''Chapter 1'');}
                     57: 
                     58: \item \texttt{\&SUMSEQ(``Z'',''Chapter 1'',''Chapter 2'',''Chapter 3'');}
                     59: 
                     60: \item \texttt{\&SUMSEQ(``Z'',''all'');} - sum over all sequences.
                     61: 
                     62: \item \texttt{\&SUMSEQ(``Z'',''regexp:Large Biomolecules'');} -
                     63:  sum over all sequences which match the regular expression 
                     64: /Large Biomolecules/.
                     65: 
                     66: \end{itemize}
                     67: 
1.1       bowersj2   68: \end{itemize}
                     69: 
1.4       matthew    70: In addition, most non-IO Perl functions work in cells.