# Sparse Grid Interpolation basics

The following chapter describes how to begin using the Sparse Grid Interpolation Toolbox for your approximation and function recovery problems.

What is the Sparse Grid Interpolation Toolbox? | Major features and key areas of the toolbox |

Initialization of the toolbox | Required prior to using the toolbox |

A first example | Interpolating a simple two-dimensional function |

Linear basis functions | Sparse grids with piecewise linear basis functions |

Polynomial basis functions | Sparse grids with polynomial basis functions |

Dimensional adaptivity | Dimension-adaptive sparse grids |

Bibliography | Selected references on sparse grids and sparse grid interpolation |