Kriging sample: model_sph.h Source File

00001 
00006 #ifndef VARIOGRAM_MODEL_SPHERICAL_
00007 #define VARIOGRAM_MODEL_SPHERICAL_
00008 
00009 #include <gsl/gsl_vector.h>
00010 #include <gsl/gsl_matrix.h>
00011 
00012 // spherical variogram model
00013 extern double spherical(double n, double s, double r, double d);
00014 
00015 //
00016 // for GSL least square fitting solver
00017 //
00018 extern int sph_f(const gsl_vector *x, void *params, gsl_vector *f);
00019 extern int sph_df(const gsl_vector *x, void *params, gsl_matrix *J);
00020 extern int sph_fdf(const gsl_vector *x, void *params, gsl_vector *f, gsl_matrix *J);
00021 
00022 #endif  //VARIOGRAM_MODEL_SPHERICAL_