Module NAG_1D_SPLINE_FIT_KNOTS in NAGC

• NAGC Information

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

NAG_1D_SPLINE_FIT_KNOTS

 
Computes a weighted least-squares approximation to an arbitrary set of data
points by a cubic spline with knots prescribed by the user. Cubic spline
interpolation can also be carried out. .
 
Classes  :  E1a .    Interpolation of univariate data by polynomial splines
                   (piecewise polynomials)
            K1a1a1 . Unconstrained linear least squares piecewise polynomial
                   approximation on univariate data (curve fitting)
            L8g .    Spline (i.e., piecewise polynomial) regression
 
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 e02bac.
 
Usage    : void nag_1d_spline_fit_knots(Integer m, double x[], double y[],
           double weights[], double *ss, Nag_Spline *spline, NagError *fail)
 
See also : nag_1d_spline_interpolant (e01bac), nag_1d_spline_evaluate
           (e02bbc), nag_1d_spline_deriv (e02bcc), nag_1d_spline_intg
           (e02bdc), nag_1d_spline_fit (e02bec)
 
Details  : Documentation Example Example-input Example-output
           Local-details
Sites    : (1) ITL
 

Implementation of NAG_1D_SPLINE_FIT_KNOTS 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 e02bac.
 
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/e02bac_cl06.pdf
   Example-outpu: cat
                  /itl/apps/nagclib-6/clsol06da/examples/results/e02bace.r
   Example      : cat
                  /itl/apps/nagclib-6/clsol06da/examples/source/e02bace.c
   Example-input: cat
                  /itl/apps/nagclib-6/clsol06da/examples/data/e02bace.d