Delila Program: rara

rara program

Documentation for the rara program is below, with links to related programs in the "see also" section.

{version = 1.02; (* of rara.p 1993 March 16}

(* begin module describe.rara *)
   rara: rank-rank reformulation of a data set

   rara(data: in, xyin: in, output: out)

   data: a data set with two columns.  '*' on the start of lines
      are comments copied to the output xyin file.
   xyin: Doubly sorted data.  The first two columns are the original two data
      columns.  The first data column is sorted.  The third column is the rank
      of the first column (1 to n, in order).  The forth column is the rank of
      the second column (1 to n but no longer in order).

   output: messages to the user

   To test data correlations but to make them insensitive to outliers, the data
   can be ranked and then graphed or the correlation coefficient found by

   First, the data pairs are sorted on the second data column.  The second data
   column is then assigned ranks (1 to n).  The data are then sorted again on
   the first data column and the first data column is assigned ranks.  This
   leaves the first data column sorted.



see also

   Thomas Dana Schneider


technical notes

(* end module describe.rara *)
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