Polynomials and Interpolation (Mathematics)

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).

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

**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).
`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

Interpolation One-Dimensional Interpolation