Cubic Spline Interpolation

CSINTERP Function—Derivative end conditions.

CSSHAPE Function—Shape preserving.

B-spline Interpolation

BSINTERP Function—One-dimensional and two-dimensional interpolation.

BSKNOTS Function—Knot sequence given interpolation data.

B-spline and Cubic Spline Evaluation and Integration

SPVALUE Function—Evaluation and differentiation.

SPINTEG Function—Integration.

Least-squares Approximation and Smoothing

FCNLSQ Function—General functions.

BSLSQ Function—Splines with fixed knots.

CONLSQ Function—Constrained spline fit.

CSSMOOTH Function—Cubic-smoothing spline.

WgSplineTool Procedure—Widget-based interface.

SMOOTHDATA1D Function—Smooth one-dimensional data by error detection.

POLYEVAL Function—Evaluates a polynomial.

WENDCOEF Function—Computes the coefficients for the Wendland polynomial of type (d,k).

POLYFITN Function—Fits a polynomial.

Scattered Data Interpolation

SCAT2DINTERP Function—Akima’s surface-fitting method.

RADBF Function—Computes a fit using radial-basis functions.

RADBE Function—Evaluates a radial-basis fit.

RBFIMSCL Procedure—Multiscale radial basis interpolation for n-dimensional data.