 Usage:  mygrid = SPKRsemat (obj, xl, xu, yl, yu, n {, se})  

 

 Input:



  obj                    list - (of type "trgls") calculated by SPKRsurfgls 

                         

  xl                     scalar - lower limit in x-direction of the rectangle for grid 

                         

  xu                     scalar - upper limit in x-direction of the rectangle for grid 

                         

  yl                     scalar - lower limit in y-direction of the rectangle for grid 

                         

  yu                     scalar - upper limit in y-direction of the rectangle for grid 

                         

  n                      scalar - use n x n grid within the rectangle 

                         

  se                     scalar - optional; standard error at distance zero as a 

                         multiple of the supplied covariance; if omitted then 

                         estimated under the assumption that a correlation 

                         function has been applied before 

                         

 Output:



  res                    list - consisting of components 

                         z, xl, xu, yl, yu, n, type -- 

                         

  z                      grid - for further useage with SPKRmultcontours 

                         

  xl                     scalar - same as input value xl 

                         

  xu                     scalar - same as input value xu 

                         

  yl                     scalar - same as input value yl 

                         

  yu                     scalar - same as input value yu 

                         

  n                      scalar - same as input value n 

                         

  type                   string - "semat" 

                         

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

