R Observatory: Metrics for interp version 1.1-6

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

interp

1.1-6

Interpolation Methods

61packages depend

715Kdownloads / year

–test coverage

11/13checks pass

Overview

About

Maintained by Albrecht GebhardtFirst published 2017-06-1613 releasesCRAN page ↗

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.

Install

R (CRAN)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("interp", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-interp

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-interp

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-interp

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

2NOTE11OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-clang
NOTE r-devel-linux-x86_64-debian-gcc

Slowest check: 9.1 min · r-oldrel-windows-x86_64

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

2

Dependencies · direct

Check history

NOTE2026-08-12
11 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-08-05
10 OK · 2 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-07-11
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-04-25
12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-04-22
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Show 2 earlier snapshots

ERROR2026-04-18
11 OK · 2 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-03-10
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesYes · dynamicpkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 91%
Documented parameters: 90%
Return-value docs: 95%
References docs: 38%

Downloads

715K

CRAN downloads in the past year

Rank #498 · ~2K/day · ~59.6K/mo

Releases R versions

Daily download trend is not available in this view yet.

47.7K30 days

156.6K90 days

715K1 year

Compare downloads with other packages →

Also on4K r2u25 autocran140K conda_forge210 c2d4u

Dependencies

Declared dependencies

12 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.5.0

Imports (2)

Rcpp deldir

LinkingTo (2)

Rcpp RcppEigen

Suggests (10)

sp Deriv Ryacas ggplot2 gridExtralatticestringi stringr scatterplot3dMASS

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

61direct

122indirect

and 13 more packages.

Code & Tests

People & History

People (3)

Maintainer (1)

Albrecht Gebhardt

Author, Maintainer, Copyright holder

Authors (3)

Albrecht Gebhardt

Author, Maintainer, Copyright holder

Roger Bivand

Author

David Sinclair

Author, Copyright holder

Copyright holders (2)

Albrecht Gebhardt

Author, Maintainer, Copyright holder

David Sinclair

Author, Copyright holder

Package Timeline

13 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
1.1-6Latest
2024-01-26 · current release · diff ↗
1.1-5
2023-11-27 · diff ↗
R
R 4.3.0 released · 2023-04-21
1.1-4
2023-03-31 · diff ↗
1.1-3
2022-07-13 · diff ↗
1.1-2
2022-05-10 · diff ↗
1.1-1
2022-05-03 · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
1.0-33
2020-01-09 · diff ↗
1.0-32
2019-05-04 · diff ↗
R
R 3.6.0 released · 2019-04-26

Show 7 earlier events

R
R 3.5.0 released · 2018-04-23
1.0-31
2018-03-26 · diff ↗
1.0-30
2018-01-17 · diff ↗
1.0-29
2017-06-17 · diff ↗
1.0-28
2017-06-17 · diff ↗
1.0-27
2017-06-16
R
R 3.4.0 released · 2017-04-21

Package metadata

First published: 2017-06-16
Total releases: 13 / 9 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.5.0
Bundled data: 5.2 KB / 6 files
Download size: 1.1 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Numerical Mathematics Analysis of Spatial Data

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("interp")

Format

Gebhardt, A., Bivand, R., & Sinclair, D. (2024). interp: Interpolation Methods (Version 1.1-6) [Computer software]. https://doi.org/10.32614/CRAN.package.interp

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for interp version 1.1-6 [Data set]. HJJB, LLC. Data release v2026-08-15. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-15, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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