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mgcv (version 1.4-2)

GAMs with GCV smoothness estimation and GAMMs by REML/PQL

Description

Routines for GAMs and other generalized ridge regression with multiple smoothing parameter selection by GCV or UBRE/AIC. Also GAMMs by REML or PQL. Includes a gam() function.

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Version

Install

install.packages('mgcv')

Monthly Downloads

481,715

Version

1.4-2

License

GPL (>=2)

Maintainer

Simon Wood

Last Published

April 4th, 2025

Functions in mgcv (1.4-2)

gam.side

Identifiability side conditions for a GAM
gam.method

Setting GAM fitting method
get.var

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

Functions implementing a pdMat class for tensor product smooths
interpret.gam

Interpret a GAM formula
step.gam

Alternatives to step.gam
choose.k

Basis dimension choice for smooths
mgcv.control

Setting mgcv defaults
residuals.gam

Generalized Additive Model residuals
smooth.construct.ps.smooth.spec

P-splines in GAMs
print.gam

Generalized Additive Model default print statement
predict.gam

Prediction from fitted GAM model
gam.check

Some diagnostics for a fitted gam model
gam2objective

Objective functions for GAM smoothing parameter estimation
gamm

Generalized Additive Mixed Models
linear.functional.terms

Linear functionals of a smooth in GAMs
s

Defining smooths in GAM formulae
notExp

Functions for better-than-log positive parameterization
notExp2

Alternative to log parameterization for variance components
gam.setup

Generalized additive model set up
full.score

GCV/UBRE score for use within nlm
plot.gam

Default GAM plotting
anova.gam

Hypothesis tests related to GAM fits
formula.gam

GAM formula
extract.lme.cov

Extract the data covariance matrix from an lme object
logLik.gam

Extract the log likelihood for a fitted GAM
magic

Stable Multiple Smoothing Parameter Estimation by GCV or UBRE, with optional fixed penalty
smooth.construct

Constructor functions for smooth terms in a GAM
formXtViX

Form component of GAMM covariance matrix
cSplineDes

Evaluate cyclic B spline basis
mroot

Smallest square root of matrix
mono.con

Monotonicity constraints for a cubic regression spline
initial.sp

Starting values for multiple smoothing parameter estimation
exclude.too.far

Exclude prediction grid points too far from data
gam

Generalized additive models with integrated smoothness estimation
gamSim

Simulate example data for GAMs
mgcv

Multiple Smoothing Parameter Estimation by GCV or UBRE
smooth.terms

Smooth terms in GAM
new.name

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

Specifying generalized additive models
uniquecombs

find the unique rows in a matrix
summary.gam

Summary for a GAM fit
smooth.construct.ad.smooth.spec

Adaptive smooths in GAMs
smoothCon

Prediction/Construction wrapper functions for GAM smooth terms
vcov.gam

Extract parameter (estimator) covariance matrix from GAM fit
gam.selection

Generalized Additive Model Selection
vis.gam

Visualization of GAM objects
smooth.construct.cr.smooth.spec

Penalized Cubic regression splines in GAMs
fix.family.link

Modify families for use in GAM fitting
negbin

GAM negative binomial family
gam.convergence

GAM convergence and performance issues
gam.control

Setting GAM fitting defaults
Predict.matrix

Prediction methods for smooth terms in a GAM
influence.gam

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

Fitted gam object
fixDependence

Detect linear dependencies of one matrix on another
pdIdnot

Overflow proof pdMat class for multiples of the identity matrix
smooth.construct.tp.smooth.spec

Penalized thin plate regression splines in GAMs
gamm.setup

Generalized additive mixed model set up
pcls

Penalized Constrained Least Squares Fitting
place.knots

Automatically place a set of knots evenly through covariate values
magic.post.proc

Auxilliary information from magic fit
gam.fit

GAM P-IRLS estimation with GCV/UBRE smoothness estimation
gam.fit3

P-IRLS GAM estimation with GCV & UBRE/AIC derivative calculation
tensor.prod.model.matrix

Utility functions for constructing tensor product smooths
te

Define tensor product smooths in GAM formulae
null.space.dimension

The basis of the space of un-penalized functions for a TPRS
model.matrix.gam

Extract model matrix from GAM fit
gam.outer

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

GAMs with GCV smoothness estimation and GAMMs by REML/PQL