cobs: Constrained B-Splines (Sparse Matrix Based)

Qualitatively Constrained (Regression) Smoothing Splines via Linear Programming and Sparse Matrices.

Version: 1.3-8
Imports: SparseM (≥ 1.6), quantreg (≥ 4.65), grDevices, graphics, splines, stats, methods
Suggests: Matrix
Published: 2024-03-06
DOI: 10.32614/CRAN.package.cobs
Author: Pin T. Ng and Martin Maechler
Maintainer: Martin Maechler <maechler at>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
URL:,,,, svn://
NeedsCompilation: yes
Citation: cobs citation info
Materials: README ChangeLog
CRAN checks: cobs results


Reference manual: cobs.pdf


Package source: cobs_1.3-8.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): cobs_1.3-8.tgz, r-oldrel (arm64): cobs_1.3-8.tgz, r-release (x86_64): cobs_1.3-8.tgz, r-oldrel (x86_64): cobs_1.3-8.tgz
Old sources: cobs archive

Reverse dependencies:

Reverse depends: logcondiscr, simest
Reverse imports: biospear, combi, demography, EventPointer, joineRML, L2E, RPPASPACE, rTwig, vital
Reverse suggests: mev, schumaker


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