onls: Orthogonal Nonlinear Least-Squares Regression

Fits two-dimensional data by means of orthogonal nonlinear least-squares using Levenberg-Marquardt minimization and provides functionality for fit diagnostics and plotting. Delivers the same results as the 'ODRPACK' Fortran implementation described in Boggs et al. (1989) <doi:10.1145/76909.76913>, but is implemented in pure R.

Version: 0.1-3
Depends: R (≥ 2.13.0), minpack.lm
Published: 2025-08-19
DOI: 10.32614/CRAN.package.onls
Author: Andrej-Nikolai Spiess [aut, cre]
Maintainer: Andrej-Nikolai Spiess <draspiess at gmail.com>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: no
Materials: NEWS
In views: Optimization
CRAN checks: onls results

Documentation:

Reference manual: onls.html , onls.pdf
Vignettes: Introduction (source, R code)

Downloads:

Package source: onls_0.1-3.tar.gz
Windows binaries: r-devel: onls_0.1-3.zip, r-release: onls_0.1-3.zip, r-oldrel: onls_0.1-3.zip
macOS binaries: r-release (arm64): onls_0.1-3.tgz, r-oldrel (arm64): onls_0.1-2.tgz, r-release (x86_64): onls_0.1-3.tgz, r-oldrel (x86_64): onls_0.1-3.tgz
Old sources: onls archive

Linking:

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