Introduction

This C++ header library features tools for piecewise linear and cubic interpolation.

For cubic piecewise interpolation, the library features three types:

• Monotone cubic interpolation
• Modified Akima spline interpolation
• Natural cubic spline interpolation

Linear interpolation is supported for N-dimensional data. Cubic interpolation supports 1-, 2- and 3-dimensional data out of the box, and can be extended to higher dimensions by inheriting from the N-dimensional base class.

All classes are templatized and support the STL's vector types.

The accompanying python script main.py in cubinterpp compares the interpolation types.

The following figure features a comparison of 1D interpolation types that are supported by cubinterpp.