Module NAG_2D_SPLINE_FIT_GRID in NAGC

• NAGC Information

• Components
  • Documentation from ITL
  • Example from ITL
  • Example-input from ITL
  • Example-output from ITL
  • Local-details from ITL

NAG_2D_SPLINE_FIT_GRID

 
Computes a bicubic spline approximation to a set of data values, given on a
rectangular grid in the x-y plane. The knots of the spline are located
automatically, but a single parameter must be specified to control the trade-off
between closeness of fit and smoothness of fit. Values of the computed spline may
be obtained using NAG Fortran Library routine nag_2d_spline_eval (e02dec).
 
Classes  :  K1a1b . Unconstrained linear least squares approximation on
                  multivariate data (surface fitting)
 
Type     : C subroutine in NAGC library (E02 sublibrary).
Access   : Proprietary. Many implementations available.
Precision: Double.
Note     : This procedure may also be invoked using the name e02dcc.
 
Usage    : void nag_2d_spline_fit_grid(Nag_Start start, Integer mx, double
           x[], Integer my, double y[], double f[], double s, Integer nxest,
           Integer nyest, double *fp, Nag_Comm *warmstartinf, Nag_2dSpline
           *spline, NagError *fail)
 
See also : nag_2d_spline_interpolant (e01dac), nag_1d_spline_fit
           (e02bec), nag_2d_spline_fit_grid (e02dcc), nag_2d_spline_eval
           (e02dec), nag_2d_spline_eval_rect (e02dfc)
 
Details  : Documentation Example Example-input Example-output
           Local-details
Sites    : (1) ITL
 

Implementation of NAG_2D_SPLINE_FIT_GRID from NAGC on ITL

 
ITL:       Unix Workstation Network, National Institute of Standards and
           Technology (NIST), Gaithersburg, MD. Available to NIST staff.
 
Precision: Double.
Note     : This procedure may also be invoked using the name e02dcc.
 
Access available only to NIST staff on internal Unix systems. They may access this
package provided the /itl tree is cross-mounted.
 
   Link         : cc -I/itl/links/generic/include -o prog prog.c
                  -L/itl/links/generic/{lib lib32 lib64}{/mips3 /mips4}
                  -lnagc -lm
   Local-details: cat /itl/apps/nagclib-6/docs/implementation
   Documentation: acroread
                  /itl/apps/nagclib-6/docs/NAGdoc/cl/pdf/E02/e02dcc_cl06.pdf
   Example-input: cat
                  /itl/apps/nagclib-6/clsol06da/examples/data/e02dcce.d
   Example-outpu: cat
                  /itl/apps/nagclib-6/clsol06da/examples/results/e02dcce.r
   Example      : cat
                  /itl/apps/nagclib-6/clsol06da/examples/source/e02dcce.c