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PEIP

2.2-5

Geophysical Inverse Theory and Optimization

1packages depend
3.4Kdownloads / year
1.3%test coverage
13/13checks pass

Overview

About
Maintained by Jonathan M. LeesFirst published 2012-05-198 releasesCRAN page ↗

Several functions introduced in Aster et al.'s book on inverse theory. The functions are often translations of MATLAB code developed by the authors to illustrate concepts of inverse theory as applied to geophysics. Generalized inversion, tomographic inversion algorithms (conjugate gradients, 'ART' and 'SIRT'), non-linear least squares, first and second order Tikhonov regularization, roughness constraints, and procedures for estimating smoothing parameters are included.

Install

Health

CRAN checks
13OK
Slowest check: 2.3 min · r-oldrel-windows-x86_64
Code health
Yes
Tests · ratio 0.01
1.3%
Coverage · measured lines
6
Dependencies · direct
Check history
  • OK2026-08-05
    13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
  • NOTE2026-08-01
    12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
  • OK2026-03-10
    14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

Documentation
READMENoVignettesNopkgdown siteNoNEWSNoCode of conductNoContributing guideNo
Examples that run
98%
Documented parameters
not tracked
Return-value docs
not tracked
References docs
44%

Downloads

3.4K
CRAN downloads in the past year
Rank #13,698 · ~9/day · ~280/mo
Daily download trend is not available in this view yet.
19030 days
74390 days
3.4K1 year
Compare downloads with other packages →
Also on102 r2u16 autocran

Dependencies

Declared dependencies
5 external dependencies (excludes base and recommended)
Depends (1)
R >= 2.12
LinkingTo (0)
none
Suggests (0)
none
Enhances (0)
none
Reverse dependencies
1direct
0indirect

Code & Tests

People & History

People (1)
Maintainer (1)
Author, Maintainer
Authors (1)
Author, Maintainer
Package Timeline

8 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
  • 2.2-5Latest
    2023-08-21 · current release · diff ↗
  • R
    R 4.3.0 released · 2023-04-21
  • R
    R 4.2.0 released · 2022-04-22
  • R
    R 4.1.0 released · 2021-05-18
  • 2.2-3
    2020-08-29 · 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
  • 2.2-1
    2018-01-18 · diff ↗
  • R
    R 3.4.0 released · 2017-04-21
  • R
    R 3.3.0 released · 2016-05-03
  • 2.0-1
    2015-06-11 · diff ↗
  • 2.0
    2015-06-09 · diff ↗
Show 7 earlier events
  • R
    R 3.2.0 released · 2015-04-16
  • R
    R 3.1.0 released · 2014-04-10
  • 1.7
    2014-01-07 · diff ↗
  • 1.6
    2014-01-05 · diff ↗
  • R
    R 3.0.0 released · 2013-04-03
  • 1.2
    2012-05-19
  • R
    R 2.15.0 released · 2012-03-30

Package metadata

First published
2012-05-19
Total releases
8 / 14 yrs
License
GPL (>= 2) OSI
Minimum R
≥ 2.12
Download size
35 KB
Installed size
not tracked yet
With dependencies
not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("PEIP")
Lees, J. M. (2023). PEIP: Geophysical Inverse Theory and Optimization (Version 2.2-5) [Computer software]. https://doi.org/10.32614/CRAN.package.PEIP

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.

APA

Balamuta, J. J. (2026). R Observatory: Metrics for PEIP version 2.2-5 [Data set]. HJJB, LLC. Data release v2026-08-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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