Module E02BAF in NAG

• NAG Information

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

E02BAF

 
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     : Fortran subroutine in NAG library (E02 sublibrary).
Access   : Proprietary. Many implementations available.
Precision: Double.
 
Usage    : CALL E02BAF (M, NCAP7, X, Y, W, K, WORK1, WORK2, C, SS, IFAIL)
 
See also : E02BBF E02BCF E02BDF
 
Details  : Documentation Example Example-input Example-output
Sites    : (1) AIX (2) ITL
 

Implementation of E02BAF from NAG on AIX

 
AIX:       IBM RS6000, National Institute of Standards and Technology (NIST),
           Gaithersburg, MD. Available to NIST staff.
 
Precision: Double.
 
Access available only to NIST staff on internal Unix systems. They may access this
package provided the /itl tree is cross-mounted.
 
   Link         : f77 -o prog prog.f -L/itl/links/generic/lib -lnag
   Documentation: acroread
                  /itl/apps/naglib-19/docs/NAGdoc/fl/pdf/E02/e02baf_fl19.pdf
   Example      : cat
                  /itl/apps/naglib-19/flib619da/examples/source/e02bafe.f
   Example-input: cat
                  /itl/apps/naglib-19/flib619da/examples/data/e02bafe.d
   Example-outpu: cat
                  /itl/apps/naglib-19/flib619da/examples/results/e02bafe.r
 

Implementation of E02BAF from NAG on ITL

 
ITL:       Unix Workstation Network, National Institute of Standards and
           Technology (NIST), Gaithersburg, MD. Available to NIST staff.
 
Precision: Double.
 
Access available only to NIST staff on internal Unix systems. They may access this
package provided the /itl tree is cross-mounted.
 
   Link         : f77 -o prog prog.f {-lcomplib.sgimath}
                  -L/itl/links/generic/{lib lib32 lib64}{/mips3 /mips4}
                  -lnag
   Documentation: acroread
                  /itl/apps/naglib-19/flib619da/NAGdoc/fl/pdf/E02/e02baf_fl19.pdf
   Example      : cat
                  /itl/apps/naglib-19/flib619da/examples/source/e02bafe.f
   Example-input: cat
                  /itl/apps/naglib-19/flib619da/examples/data/e02bafe.d
   Example-outpu: cat
                  /itl/apps/naglib-19/flib619da/examples/results/e02bafe.r