 Usage:  sc = glmscatter(code,x,y)  

 

 Input:



  code                   text string, the short code for the model (e.g. 

                         "bilo" for logit or "noid" for ordinary LS). 

                         

  x                      n x 1 matrix, explanatory variable. 

                         

  y                      n x 1 response. 

                         

  opt                    optional, a list with optional input. The macro 

                         "glmopt" can be used to set up this parameter. 

                         The order of the list elements is not important. 

                         Parameters which are not given are replaced by 

                         defaults (see below). 

                         

  opt.weights            string, type of weights. Can be "frequency" 

                         for replication counts, or "prior" (default) 

                         for prior weights in weighted regression. 

                         

  opt.wx                 scalar or n x 1 vector, frequency or prior 

                         weights. If not given, set to 1. 

                         

  opt.pow                optional, power for power link. 

                         

  opt.nbk                scalar, extra parameter k for negative binomial 

                         distribution. If not given, set to 1 (geometric 

                         distribution). 

                         

 Output:



  sc                     m x 2 discretized or binned x in the first 

                         column and the invers link function applied 

                         to the averaged y (in bin) in the second column. 

                         

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(C) MD*TECH Method and Data Technologies, 21.9.2000

