Learn R Programming
⚠️There's a newer version (1.9-4) of this package.Take me there.

mgcv (version 1.8-12)

Mixed GAM Computation Vehicle with GCV/AIC/REML Smoothness Estimation

Description

GAMs, GAMMs and other generalized ridge regression with multiple smoothing parameter estimation by GCV, REML or UBRE/AIC. Includes a gam() function, a wide variety of smoothers, JAGS support and distributions beyond the exponential family.

Copy Link

Version

Install

install.packages('mgcv')

Monthly Downloads

106,646

Version

1.8-12

License

GPL (>= 2)

Maintainer

Simon Wood

Last Published

March 3rd, 2016

Functions in mgcv (1.8-12)

fs.test

FELSPLINE test function
interpret.gam

Interpret a GAM formula
gamm

Generalized Additive Mixed Models
exclude.too.far

Exclude prediction grid points too far from data
logLik.gam

Log likelihood for a fitted GAM, for AIC
Rrank

Find rank of upper triangular matrix
cSplineDes

Evaluate cyclic B spline basis
fix.family.link

Modify families for use in GAM fitting and checking
sp.vcov

Extract smoothing parameter estimator covariance matrix from (RE)ML GAM fit
gaulss

Gaussian location-scale model family
gam.vcomp

Report gam smoothness estimates as variance components
pdIdnot

Overflow proof pdMat class for multiples of the identity matrix
bam

Generalized additive models for very large datasets
negbin

GAM negative binomial families
mvn

Multivariate normal additive models
smooth.construct.sos.smooth.spec

Splines on the sphere
bandchol

Choleski decomposition of a band diagonal matrix
mroot

Smallest square root of matrix
random.effects

Random effects in GAMs
slanczos

Compute truncated eigen decomposition of a symmetric matrix
gam.control

Setting GAM fitting defaults
gam.fit3

P-IRLS GAM estimation with GCV \& UBRE/AIC or RE/ML derivative calculation
smooth.construct.t2.smooth.spec

Tensor product smoothing constructor
smooth.construct.tensor.smooth.spec

Tensor product smoothing constructor
smooth.construct.mrf.smooth.spec

Markov Random Field Smooths
residuals.gam

Generalized Additive Model residuals
inSide

Are points inside boundary?
new.name

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

Scale parameter estimation in GAMs
gamObject

Fitted gam object
print.gam

Print a Generalized Additive Model object.
polys.plot

Plot geographic regions defined as polygons
get.var

Get named variable or evaluate expression from list or data.frame
model.matrix.gam

Extract model matrix from GAM fit
columb

Reduced version of Columbus OH crime data
jagam

Just Another Gibbs Additive Modeller: JAGS support for mgcv.
pcls

Penalized Constrained Least Squares Fitting
smooth.terms

Smooth terms in GAM
ls.size

Size of list elements
gam

Generalized additive models with integrated smoothness estimation
initial.sp

Starting values for multiple smoothing parameter estimation
null.space.dimension

The basis of the space of un-penalized functions for a TPRS
smooth.construct.tp.smooth.spec

Penalized thin plate regression splines in GAMs
mono.con

Monotonicity constraints for a cubic regression spline
smooth.construct.gp.smooth.spec

Low rank Gaussian process smooths
notExp2

Alternative to log parameterization for variance components
ziP

GAM zero-inflated Poisson regression family
anova.gam

Approximate hypothesis tests related to GAM fits
smooth.construct.re.smooth.spec

Simple random effects in GAMs
tensor.prod.model.matrix

Utility functions for constructing tensor product smooths
mgcv.parallel

Parallel computation in mgcv.
cox.ph

Additive Cox Proportional Hazard Model
multinom

GAM multinomial logistic regression
Predict.matrix.soap.film

Prediction matrix for soap film smooth
rig

Generate inverse Gaussian random deviates
smooth.construct.cr.smooth.spec

Penalized Cubic regression splines in GAMs
rmvn

Generate multivariate normal deviates
Predict.matrix.cr.smooth

Predict matrix method functions
bug.reports.mgcv

Reporting mgcv bugs.
step.gam

Alternatives to step.gam
formula.gam

GAM formula
full.score

GCV/UBRE score for use within nlm
influence.gam

Extract the diagonal of the influence/hat matrix for a GAM
family.mgcv

Distribution families in mgcv
rTweedie

Generate Tweedie random deviates
extract.lme.cov

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

Some diagnostics for a fitted gam model
smooth.construct

Constructor functions for smooth terms in a GAM
predict.bam

Prediction from fitted Big Additive Model model
smooth.construct.fs.smooth.spec

Factor smooth interactions in GAMs
scat

GAM scaled t family for heavy tailed data
plot.gam

Default GAM plotting
smooth.construct.so.smooth.spec

Soap film smoother constructer
smooth.construct.ps.smooth.spec

P-splines in GAMs
uniquecombs

find the unique rows in a matrix
s

Defining smooths in GAM formulae
smoothCon

Prediction/Construction wrapper functions for GAM smooth terms
ocat

GAM ordered categorical family
gam.selection

Generalized Additive Model Selection
predict.gam

Prediction from fitted GAM model
gam.side

Identifiability side conditions for a GAM
magic.post.proc

Auxilliary information from magic fit
pdTens

Functions implementing a pdMat class for tensor product smooths
ziplss

Zero inflated Poisson location-scale model family
sdiag

Extract of modify diagonals of a matrix
qq.gam

QQ plots for gam model residuals
pen.edf

Extract the effective degrees of freedom associated with each penalty in a gam fit
te

Define tensor product smooths or tensor product interactions in GAM formulae
trichol

Choleski decomposition of a tri-diagonal matrix
vcov.gam

Extract parameter (estimator) covariance matrix from GAM fit
spasm.construct

Experimental sparse smoothers
notExp

Functions for better-than-log positive parameterization
betar

GAM beta regression family
fixDependence

Detect linear dependencies of one matrix on another
t2

Define alternative tensor product smooths in GAM formulae
gamSim

Simulate example data for GAMs
Tweedie

GAM Tweedie families
formXtViX

Form component of GAMM covariance matrix
missing.data

Missing data in GAMs
linear.functional.terms

Linear functionals of a smooth in GAMs
place.knots

Automatically place a set of knots evenly through covariate values
vis.gam

Visualization of GAM objects
single.index

Single index models with mgcv
summary.gam

Summary for a GAM fit
gam.fit

GAM P-IRLS estimation with GCV/UBRE smoothness estimation
bam.update

Update a strictly additive bam model for new data.
magic

Stable Multiple Smoothing Parameter Estimation by GCV or UBRE
smooth.construct.ds.smooth.spec

Low rank Duchon 1977 splines
gam2objective

Objective functions for GAM smoothing parameter estimation
Predict.matrix

Prediction methods for smooth terms in a GAM
concurvity

GAM concurvity measures
gam.convergence

GAM convergence and performance issues
ldTweedie

Log Tweedie density evaluation
mgcv.package

Mixed GAM Computation Vehicle with GCV/AIC/REML smoothness estimation and GAMMs by REML/PQL
smooth.construct.ad.smooth.spec

Adaptive smooths in GAMs
choose.k

Basis dimension choice for smooths
gam.outer

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

Which of a set of points lie within a polygon defined region
gam.models

Specifying generalized additive models
mgcv.FAQ

Frequently Asked Questions for package mgcv
smooth.construct.bs.smooth.spec

Penalized B-splines in GAMs