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    1: \label{Spreadsheet_Functions}
    2: The following special functions are available in the spreadsheet.
    3: Please see Referencing Cells (\ref{Spreadsheet_Referencing_Cells})
    4: for information on specifying cells and ranges.
    5: 
    6: \begin{itemize}
    7: 
    8: \item \texttt{\&NUM(range)} - number of non-empty cells in range
    9: \index{NUM}
   10: 
   11: \item \texttt{\&BIN(low, high, range)} - number of non-empty cells in
   12:   range with values between low and high
   13: \index{BIN}
   14: 
   15: \item \texttt{\&SUM(range)} - sum of the non-empty cells in range
   16: \index{SUM}
   17: 
   18: \item \texttt{\&MEAN(range)} - mean value of non-empty cells in range
   19: \index{MEAN}
   20: 
   21: \item \texttt{\&STDDEV(range)} - standard deviation of non-empty cells
   22:   in range 
   23: \index{STDDEV}
   24: 
   25: \item \texttt{\&PROD(range)} - product of non-empty cells in range
   26: \index{PROD}
   27: 
   28: \item \texttt{\&MAX(range)} - maximum value of non-empty cell in range
   29: \index{MAX}
   30: 
   31: \item \texttt{\&MIN(range)} - minimum value of non-empty cells in
   32:   range 
   33: \index{MIN}
   34: 
   35: \item \texttt{\&SUMMAX(n ,range)} - sum of the maximum $n$ non-empty
   36:   cells in range
   37: \index{SUMMAX}
   38: 
   39: \item \texttt{\&SUMMIN(n, range)} - sum of the minimum $n$ non-empty
   40:   cells in range
   41: \index{SUMMIN}
   42: 
   43: \item \texttt{\&EXT(expression)} - access to EXT function in lonnet.
   44: Use \texttt{\&EXT('system.time')} to retrieve the current time.
   45: \index{EXT}
   46: 
   47: \item \texttt{\&PARM(parameter)} - get the value of a specific parameter 
   48: \index{PARM}
   49: 
   50: \item \texttt{\&MINPARM(expression)} - get the value of a parameter that 
   51: matches the expression that is the smallest in value (If one specified 
   52: 'opendate' it would return the smallest opendate set on the problem.)
   53: \index{MINPARM}
   54: 
   55: \item \texttt{\&MAXPARM(expression)} -  get the value of a parameter that 
   56: matches the expression that is the largest in value (If one specified 
   57: 'opendate' it would return the largest opendate set on the problem.)
   58: \index{MAXPARM}
   59: 
   60: \item \texttt{\&SUMSEQ(column,sequence1,sequence2,sequence3,...)} -
   61: sum the given column across the folders or sequences listed.
   62: 
   63: When specifying a sequence use the full title.  Instead of a sequence title
   64: the word \texttt{all} can be used to sum over all sequences.  Regular expressions
   65: can be entered as well, if prefixed by \texttt{regexp:}.  See below for examples.
   66: 
   67: \begin{itemize}
   68: 
   69: \item \texttt{\&SUMSEQ('Z','Chapter 1');}
   70: 
   71: \item \texttt{\&SUMSEQ('Z','Chapter 1','Chapter 2','Chapter 3');}
   72: 
   73: \item \texttt{\&SUMSEQ('Z','all');} - sum over all sequences.
   74: 
   75: \item \texttt{\&SUMSEQ('Z','regexp:Large Biomolecules');} -
   76:  sum over all sequences which match the regular expression 
   77: /Large Biomolecules/.
   78: 
   79: \end{itemize}
   80: 
   81: \end{itemize}
   82: 
   83: In addition, most non-IO Perl functions work in cells.