Mathematics

Interpolation Function Summary

MATLAB provides a number of interpolation techniques that let you balance the smoothness of the data fit with speed of execution and memory usage.

The interpolation functions reside in the MATLAB polyfun directory.

Interpolation Function Summary  

Function	Description
griddata	Data gridding and surface fitting.
griddata3	Data gridding and hypersurface fitting for three-dimensional data.
griddatan	Data gridding and hypersurface fitting (dimension >= 3).
interp1	One-dimensional interpolation (table lookup).
interp2	Two-dimensional interpolation (table lookup).
interp3	Three-dimensional interpolation (table lookup).
interpft	One-dimensional interpolation using FFT method.
interpn	N-D interpolation (table lookup).
pchip	Piecewise Cubic Hermite Interpolating Polynomial (PCHIP).
spline	Cubic spline data interpolation.

Interpolation

One-Dimensional Interpolation