 Usage:  hrot = denrot(x {,K {,opt}})  

 

 Input:



  x                      n x 1 vector, the data. 

                         

  K                      string, kernel function on [-1,1]^p. If not given, 

                         the Quartic kernel "qua" is used. 

                         

  opt                    string, if opt equals "robust", a robust estimate 

                         for the standard deviation of the data is used. 

                         

 Output:



  hrot                   scalar, rule-of-thumb bandwidth. 

                         

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

