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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-dimensional interpolation (table lookup).
mkpp
Make a piecewise polynomial
pchip
Piecewise Cubic Hermite Interpolating Polynomial (PCHIP).
ppval
Piecewise polynomial evaluation
spline
Cubic spline data interpolation
unmkpp
Piecewise polynomial details


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