VGAM: Vector Generalized Linear and Additive Models

This package fits many (150+) models and distributions by maximum likelihood estimation (MLE) or penalized MLE, using Fisher scoring. This is done via the vector generalized linear and additive model (VGLM/VGAM) classes and associated models (reduced-rank VGLMs, quadratic RR-VGLMs, reduced-rank VGAMs, row-column interaction models). These are abbreviated RR-VGLMs, QRR-VGLMs, RR-VGAMs and RCIMs. These include constrained and unconstrained quadratic ordination (CQO/UQO) models in ecology as well as constrained additive ordination (CAO). Note that these functions are subject to change, especially before version 1.0.0 is released; see the NEWS file for latest changes.

Version: 0.9-5
Depends: R (≥ 3.0.0), methods, stats, stats4, splines
Suggests: VGAMdata, MASS
Published: 2014-11-06
Author: Thomas W. Yee
Maintainer: Thomas Yee <t.yee at>
License: GPL-2
NeedsCompilation: yes
Citation: VGAM citation info
Materials: NEWS
In views: Distributions, Econometrics, Environmetrics, Multivariate, Psychometrics, Survival
CRAN checks: VGAM results


Reference manual: VGAM.pdf
Vignettes: The VGAM Package for Categorical Data Analysis
Package source: VGAM_0.9-5.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
OS X Snow Leopard binaries: r-release: VGAM_0.9-5.tgz, r-oldrel: VGAM_0.9-5.tgz
OS X Mavericks binaries: r-release: VGAM_0.9-5.tgz
Old sources: VGAM archive

Reverse dependencies:

Reverse depends: Bayesthresh, BSquare, EffectStars, ExomeDepth, GEVcdn, iteRates, lawstat, MiClip, multgee, ordBTL, pheno2geno, prob, ZeligChoice
Reverse imports: AICcmodavg, cg, ExtDist, HiDimMaxStable, list, lllcrc, poweRlaw, sads, SemiParBIVProbit
Reverse suggests: catdata, cubfits, isdals, mediation, mnlogit, modeest, MXM, partDSA, sampleSelection, vcdExtra, VGAMdata