 Usage:  u = recode(c, p)  
 
 Input:

  c                      l x 1 matrix of upper bounds (cutpoints) of 
                         intervals according to p 
                         
  p                      n x 1 matrix of categories (positive integers 
                         1,2,...,K) which have to be recoded into a 
                         smaller number of integers 1,2,...,l 
                         
                         
 Output:

  u                      n x 1 matrix containing the new categories of p 
                         
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(C) MD*TECH Method and Data Technologies, 17.8.2000
