akima

0.6-3.6

Interpolation of Irregularly and Regularly Spaced Data

7packages depend

123.6Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Albrecht GebhardtFirst published 1998-08-2028 releasesCRAN page ↗

Several cubic spline interpolation methods of H. Akima for irregular and regular gridded data are available through this package, both for the bivariate case (irregular data: ACM 761, regular data: ACM 760) and univariate case (ACM 433 and ACM 697). Linear interpolation of irregular gridded data is also covered by reusing D. J. Renkas triangulation code which is part of Akimas Fortran code. A bilinear interpolator for regular grids was also added for comparison with the bicubic interpolator on regular grids. Please note that most of the functions are now also covered in package interp, which is a re-implementation from scratch under a free license.

Install

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

install.packages("akima")

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

Release

# one-time r2u setup for Ubuntu (noble)

curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash

# then install

sudo apt install r-cran-akima

Fast Ubuntu binaries via r2u (no compilation). Run the setup once per machine.

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

sudo zypper install R-akima

RPMs auto-built from CRAN on openSUSE OBS.

Health

CRAN checks

13OK

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

None

Vignettes

README

Dependencies · direct

Check history

OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Downloads

123.6K

CRAN downloads in the past year

Rank #1,265 · ~339/day · ~10.3K/mo

7K30 days

29.7K90 days

123.6K1 year

Also on785 r2u43 autocran19.8K conda_forge15 c2d4u

Source & community

Repository stars, issues, and contributor activity are not tracked yet.

Dependencies

Declared dependencies

1 external dependency (excludes base and recommended)

Depends (1)

R >= 2.0.0

Imports (1)

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Reverse dependencies

7direct

–indirect (not tracked)

ONAM ParamHelpers fastlpr fitlandr mlrMBO prinsurf puff

Code

12,720Lines of code

14Exported functions

Code & tests

Open call graph →

Line coverage

–

Expression

–

Tests / Examples

–

Functions

61 14 exported

Complexity

6.9 avg / 32 max

Call network

61 nodes / 50 edges

Loading call graph…

Lowest coverage

Per-function coverage is not measured for this package yet.

People & History

People (5)

Maintainer (1)

Albrecht Gebhardt

Author, Maintainer, Copyright holder

Authors (1)

Hiroshi Akima

Author, Copyright holder

Contributors (2)

Martin Maechler

Contributor, Copyright holder

Thomas Petzold

Contributor, Copyright holder

YYYY Association for Computing Machinery, Inc.

Release timeline

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

R
R 4.6.0 released · 2026-04-24
0.6-3.6Latest
2025-06-02 · current release
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
0.6-3.4
2022-04-27 · diff ↗
R
R 4.2.0 released · 2022-04-22
0.6-3.3
2022-04-19 · diff ↗
0.6-2.3
2021-11-02 · diff ↗
0.6-2.2
2021-08-17 · diff ↗
R
R 4.1.0 released · 2021-05-18
0.6-2.1
2020-05-30 · diff ↗
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21

Show 47 earlier events

0.6-2
2016-12-20 · diff ↗
0.6-1
2016-12-16 · diff ↗
R
R 3.3.0 released · 2016-05-03
0.5-12
2015-09-15 · diff ↗
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R 3.2.0 released · 2015-04-16
R
R 3.1.0 released · 2014-04-10
0.5-11
2013-09-16 · diff ↗
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R 3.0.0 released · 2013-04-03
0.5-10
2013-03-01 · diff ↗
0.5-9
2013-01-20 · diff ↗
0.5-8
2012-12-05 · diff ↗
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R 2.15.0 released · 2012-03-30
0.5-7
2012-01-08 · diff ↗
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R 2.14.0 released · 2011-10-31
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R 2.13.0 released · 2011-04-13
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R 2.12.0 released · 2010-10-15
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R 2.11.0 released · 2010-04-22
0.5-4
2009-11-04 · diff ↗
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R 2.10.0 released · 2009-10-26
0.5-3
2009-09-21 · diff ↗
0.5-2
2009-06-14 · diff ↗
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R 2.9.0 released · 2009-04-17
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R 2.8.0 released · 2008-10-20
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R 2.7.0 released · 2008-04-22
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R 2.6.0 released · 2007-10-03
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R 2.5.0 released · 2007-04-24
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R 2.4.0 released · 2006-10-03
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R 2.3.0 released · 2006-04-24
0.5-1
2006-02-03 · diff ↗
R
R 2.2.0 released · 2005-10-06
0.4-5
2005-07-21 · diff ↗
R
R 2.1.0 released · 2005-04-18
0.4-4
2005-04-01 · diff ↗
0.4-3
2005-01-09 · diff ↗
R
R 2.0.0 released · 2004-10-04
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R 1.9.0 released · 2004-04-12
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R 1.8.0 released · 2003-10-08
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R 1.7.0 released · 2003-04-16
R
R 1.6.0 released · 2002-10-01
0.3-4
2002-05-07 · diff ↗
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R 1.5.0 released · 2002-04-29
0.3-3
2002-01-01 · diff ↗
0.3-2
2001-06-18 · diff ↗
0.3-1
2001-01-10 · diff ↗
0.2-5
2000-06-04 · diff ↗
0.2-4
1999-08-19 · diff ↗
0.2-3
1998-08-20

Package metadata

First published: 1998-08-20
Total releases: 28 / 28 yrs
License: file LICENSE
Download size: not tracked yet
Installed size: not tracked yet
With dependencies: not tracked yet