# Interpolation Methods

## Documentation for package ‘interp’ version 1.0-33

- DESCRIPTION file.

## Help Pages

interp-package | Interpolation of data
arcs | Extract a list of arcs from a triangulation object.
area | Extract a list of triangle areas from a triangulation object.
circles | Add circles to a plot
convex.hull | Return the convex hull of a triangulation object
franke | Test datasets from Franke for interpolation of scattered data
franke.data | Test datasets from Franke for interpolation of scattered data
franke.fn | Test datasets from Franke for interpolation of scattered data
identify.triSht | Identify points in a triangulation plot
in.convex.hull | Determines if points are on or in the convex hull of a triangulation object
interp | Interpolation function
interpp | Pointwise interpolate irregular gridded data
left | Determines if a point is on or left of the vector described by two other points.
locpoly | Local polynomial fit.
nearest.neighbours | Nearest neighbour structure for a data set
on | Determines if a point is on or left of the vector described by two other points.
on.convex.hull | Determines if points are on or in the convex hull of a triangulation object
outer.convhull | Version of outer which operates only in a convex hull
plot.triSht | Plot a triangulation object
plot.voronoi | Plot a voronoi object
plot.voronoi.polygons | plots an voronoi.polygons object
print.summary.triSht | Print a summary of a triangulation object
print.summary.voronoi | Print a summary of a voronoi object
print.triSht | Print a triangulation object
print.voronoi | Print a voronoi object
summary.triSht | Return a summary of a triangulation object
summary.voronoi | Return a summary of a voronoi object
tri.find | Locate a point in a triangulation
tri.mesh | Delaunay triangulation
triangles | Extract a list of triangles from a triangulation object
triSht | A triangulation object
voronoi | Voronoi object
voronoi.area | Calculate area of Voronoi polygons
voronoi.findrejectsites | Find the Voronoi sites at the border of the region (to be rejected).
voronoi.mosaic | Voronoi mosaic
voronoi.polygons | extract polygons from a voronoi mosaic