CRAN/E | interp

interp

Interpolation Methods

Installation

About

Bivariate data interpolation on regular and irregular grids, either linear or using splines are the main part of this package. It is intended to provide FOSS replacement functions for the ACM licensed akima::interp and tripack::tri.mesh functions. Linear interpolation is implemented in interp::interp(..., method="linear"), this corresponds to the call akima::interp(..., linear=TRUE) which is the default setting and covers most of akima::interp use cases in depending packages. A re-implementation of Akimas irregular grid spline interpolation (akima::interp(..., linear=FALSE)) is now also available via interp::interp(..., method="akima"). Estimators for partial derivatives are now also available in interp::locpoly(), these are a prerequisite for the spline interpolation. The basic part is a GPLed triangulation algorithm (sweep hull algorithm by David Sinclair) providing the starting point for the irregular grid interpolator. As side effect this algorithm is also used to provide replacements for almost all functions of the tripack package which also suffers from the same ACM license restrictions. All functions are designed to be backward compatible with their akima / tripack counterparts.

Key Metrics

Version 1.1-6
R ≥ 3.5.0
Published 2024-01-26 62 days ago
Needs compilation? yes
License GPL-2
License GPL-3
CRAN checks interp results

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Maintainer

Maintainer

Albrecht Gebhardt

albrecht.gebhardt@aau.at

Authors

Albrecht Gebhardt

aut / cre / cph

Roger Bivand

aut

David Sinclair

aut / cph

(author of the shull library)

Material

README
Reference manual
Package source

In Views

NumericalMathematics
Spatial

Vignettes

Interpolation
Local polynomial regression in two variables applied to estimating partial derivatives
Triangulation of irregular spaced data

macOS

r-release

arm64

r-oldrel

arm64

r-release

x86_64

Windows

r-devel

x86_64

r-release

x86_64

r-oldrel

x86_64

Old Sources

interp archive

Depends

R ≥ 3.5.0

Imports

Rcpp ≥ 0.12.9
deldir

Suggests

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Enhances

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LinkingTo

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Reverse Depends

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