mgcv1.9-1 package

Mixed GAM Computation Vehicle with Automatic Smoothness Estimation

cSplineDes

Evaluate cyclic B spline basis

dDeta

Obtaining derivative w.r.t. linear predictor

dpnorm

Stable evaluation of difference between normal c.d.f.s

anova.gam

Approximate hypothesis tests related to GAM fits

bam

Generalized additive models for very large datasets

bam.update

Update a strictly additive bam model for new data.

factor.smooth

Factor smooth interactions in GAMs

bandchol

Choleski decomposition of a band diagonal matrix

Beta

GAM beta regression family

blas.thread.test

BLAS thread safety

bug.reports.mgcv

Reporting mgcv bugs.

chol.down

Deletion and rank one Cholesky factor update

choose.k

Basis dimension choice for smooths

cnorm

GAM censored normal family for log-normal AFT and Tobit models

concurvity

GAM concurvity measures

coxph

Additive Cox Proportional Hazard Model

family.mgcv

Distribution families in mgcv

coxpht

Additive Cox proportional hazard models with time varying covariates

exclude.too.far

Exclude prediction grid points too far from data

extract.lme.cov

Extract the data covariance matrix from an lme object

FFdes

Level 5 fractional factorial designs

fix.family.link

Modify families for use in GAM fitting and checking

fixDependence

Detect linear dependencies of one matrix on another

formula.gam

GAM formula

formXtViX

Form component of GAMM covariance matrix

fs.test

FELSPLINE test function

full.score

GCV/UBRE score for use within nlm

gam.check

Some diagnostics for a fitted gam model

gam.control

Setting GAM fitting defaults

gam.convergence

GAM convergence and performance issues

gam.fit

GAM P-IRLS estimation with GCV/UBRE smoothness estimation

gam.fit3

P-IRLS GAM estimation with GCV, UBRE/AIC or RE/ML derivative calculati...

gam.fit5.post.proc

Post-processing output of gam.fit5

gam.mh

Simple posterior simulation with gam fits

gam.models

Specifying generalized additive models

gam.outer

Minimize GCV or UBRE score of a GAM using `outer' iteration

gam

Generalized additive models with integrated smoothness estimation

gam.reparam

Finding stable orthogonal re-parameterization of the square root penal...

gam.scale

Scale parameter estimation in GAMs

gam.selection

Generalized Additive Model Selection

gam.side

Identifiability side conditions for a GAM

gam.vcomp

Report gam smoothness estimates as variance components

gam2objective

Objective functions for GAM smoothing parameter estimation

gamlss.etamu

Transform derivatives wrt mu to derivatives wrt linear predictor

gamlss.gH

Calculating derivatives of log-likelihood wrt regression coefficients

gamm

Generalized Additive Mixed Models

gammals

Gamma location-scale model family

gamObject

Fitted gam object

gamSim

Simulate example data for GAMs

gaulss

Gaussian location-scale model family

get.var

Get named variable or evaluate expression from list or data.frame

gevlss

Generalized Extreme Value location-scale model family

gfam

Grouped families

ginla

GAM Integrated Nested Laplace Approximation Newton Enhanced

gumbls

Gumbel location-scale model family

identifiability

Identifiability constraints

in.out

Which of a set of points lie within a polygon defined region

influence.gam

Extract the diagonal of the influence/hat matrix for a GAM

initial.sp

Starting values for multiple smoothing parameter estimation

inSide

Are points inside boundary?

interpret.gam

Interpret a GAM formula

jagam

Just Another Gibbs Additive Modeller: JAGS support for mgcv.

k.check

Checking smooth basis dimension

ldetS

Getting log generalized determinant of penalty matrices

ldTweedie

Log Tweedie density evaluation

linear.functional.terms

Linear functionals of a smooth in GAMs

logLik.gam

AIC and Log likelihood for a fitted GAM

ls.size

Size of list elements

magic.post.proc

Auxilliary information from magic fit

magic

Stable Multiple Smoothing Parameter Estimation by GCV or UBRE

mgcv-FAQ

Frequently Asked Questions for package mgcv

mgcv-package

Mixed GAM Computation Vehicle with GCV/AIC/REML/NCV smoothness estimat...

mgcv-parallel

Parallel computation in mgcv.

mini.roots

Obtain square roots of penalty matrices

missing.data

Missing data in GAMs

model.matrix.gam

Extract model matrix from GAM fit

mono.con

Monotonicity constraints for a cubic regression spline

mroot

Smallest square root of matrix

multinom

GAM multinomial logistic regression

mvn

Multivariate normal additive models

NCV

Neighbourhood Cross Validation

negbin

GAM negative binomial families

new.name

Obtain a name for a new variable that is not already in use

notExp

Functions for better-than-log positive parameterization

notExp2

Alternative to log parameterization for variance components

null.space.dimension

The basis of the space of un-penalized functions for a TPRS

ocat

GAM ordered categorical family

one.se.rule

The one standard error rule for smoother models

pcls

Penalized Constrained Least Squares Fitting

pdIdnot

Overflow proof pdMat class for multiples of the identity matrix

pdTens

Functions implementing a pdMat class for tensor product smooths

pen.edf

Extract the effective degrees of freedom associated with each penalty ...

place.knots

Automatically place a set of knots evenly through covariate values

plot.gam

Default GAM plotting

polys.plot

Plot geographic regions defined as polygons

predict.bam

Prediction from fitted Big Additive Model model

predict.gam

Prediction from fitted GAM model

Predict.matrix.cr.smooth

Predict matrix method functions

Predict.matrix

Prediction methods for smooth terms in a GAM

Predict.matrix.soap.film

Prediction matrix for soap film smooth

print.gam

Print a Generalized Additive Model object.

psum.chisq

Evaluate the c.d.f. of a weighted sum of chi-squared deviates

qq.gam

QQ plots for gam model residuals

random.effects

Random effects in GAMs

residuals.gam

Generalized Additive Model residuals

rig

Generate inverse Gaussian random deviates

rmvn

Generate from or evaluate multivariate normal or t densities.

Rrank

Find rank of upper triangular matrix

rTweedie

Generate Tweedie random deviates

s

Defining smooths in GAM formulae

scat

GAM scaled t family for heavy tailed data

sdiag

Extract or modify diagonals of a matrix

shash

Sinh-arcsinh location scale and shape model family

single.index

Single index models with mgcv

Sl.initial.repara

Re-parametrizing model matrix X

Sl.repara

Applying re-parameterization from log-determinant of penalty matrix to...

Sl.setup

Setting up a list representing a block diagonal penalty matrix

slanczos

Compute truncated eigen decomposition of a symmetric matrix

smooth.construct.ad.smooth.spec

Adaptive smooths in GAMs

smooth.construct.bs.smooth.spec

Penalized B-splines in GAMs

smooth.construct.cr.smooth.spec

Penalized Cubic regression splines in GAMs

smooth.construct.ds.smooth.spec

Low rank Duchon 1977 splines

smooth.construct.fs.smooth.spec

Factor smooth interactions in GAMs

smooth.construct.gp.smooth.spec

Low rank Gaussian process smooths

smooth.construct.mrf.smooth.spec

Markov Random Field Smooths

smooth.construct.ps.smooth.spec

P-splines in GAMs

smooth.construct

Constructor functions for smooth terms in a GAM

smooth.construct.re.smooth.spec

Simple random effects in GAMs

smooth.construct.so.smooth.spec

Soap film smoother constructer

smooth.construct.sos.smooth.spec

Splines on the sphere

smooth.construct.sz.smooth.spec

Constrained factor smooth interactions in GAMs

smooth.construct.t2.smooth.spec

Tensor product smoothing constructor

smooth.construct.tensor.smooth.spec

Tensor product smoothing constructor

smooth.construct.tp.smooth.spec

Penalized thin plate regression splines in GAMs

smooth.info

Generic function to provide extra information about smooth specificati...

smooth.terms

Smooth terms in GAM

smooth2random

Convert a smooth to a form suitable for estimating as random effect

smoothCon

Prediction/Construction wrapper functions for GAM smooth terms

sp.vcov

Extract smoothing parameter estimator covariance matrix from (RE)ML GA...

spasm.construct

Experimental sparse smoothers

step.gam

Alternatives to step.gam

summary.gam

Summary for a GAM fit

t2

Define alternative tensor product smooths in GAM formulae

te

Define tensor product smooths or tensor product interactions in GAM fo...

tensor.prod.model.matrix

Row Kronecker product/ tensor product smooth construction

totalPenaltySpace

Obtaining (orthogonal) basis for null space and range of the penalty m...

trichol

Choleski decomposition of a tri-diagonal matrix

trind.generator

Generates index arrays for upper triangular storage

Tweedie

GAM Tweedie families

twlss

Tweedie location scale family

uniquecombs

find the unique rows in a matrix

vcov.gam

Extract parameter (estimator) covariance matrix from GAM fit

vis.gam

Visualization of GAM objects

XWXd

Internal functions for discretized model matrix handling

ziP

GAM zero-inflated (hurdle) Poisson regression family

ziplss

Zero inflated (hurdle) Poisson location-scale model family

Generalized additive (mixed) models, some of their extensions and other generalized ridge regression with multiple smoothing parameter estimation by (Restricted) Marginal Likelihood, Generalized Cross Validation and similar, or using iterated nested Laplace approximation for fully Bayesian inference. See Wood (2017) <doi:10.1201/9781315370279> for an overview. Includes a gam() function, a wide variety of smoothers, 'JAGS' support and distributions beyond the exponential family.

  • Maintainer: Simon Wood
  • License: GPL (>= 2)
  • Last published: 2023-12-21