Function Reference

Interpolation

One-dimensional Interpolation

interp1
One-dimensional interpolation.
interp1q
One-dimensional linear interpolation without error checking.
interpft
Fourier interpolation.
spline
Returns the cubic spline interpolation of Y at the point X.
lookup
Lookup values in a sorted table.

Multi-dimensional Interpolation

interp2
Two-dimensional interpolation.
interp3
Perform 3-dimensional interpolation.
interpn
Perform N-dimensional interpolation, where N is at least two.
bicubic
Return a matrix ZI corresponding to the bicubic interpolations at XI and YI of the data supplied as X, Y and Z.