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mgcv (version 1.7-21)

Mixed GAM Computation Vehicle with GCV/AIC/REML smoothness estimation

Description

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

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Version

Install

install.packages('mgcv')

Monthly Downloads

106,646

Version

1.7-21

License

GPL (>= 2)

Maintainer

Simon Wood

Last Published

September 18th, 2012

Functions in mgcv (1.7-21)

Predict.matrix

Prediction methods for smooth terms in a GAM
concurvity

GAM concurvity measures
in.out

Which of a set of points lie within a polygon defined region
notExp2

Alternative to log parameterization for variance components
gam.control

Setting GAM fitting defaults
smooth.construct.re.smooth.spec

Simple random effects in GAMs
smooth.construct

Constructor functions for smooth terms in a GAM
inSide

Are points inside boundary?
plot.gam

Default GAM plotting
choose.k

Basis dimension choice for smooths
smooth.terms

Smooth terms in GAM
predict.bam

Prediction from fitted Big Additive Model model
bam

Generalized additive models for very large datasets
ldTweedie

Log Tweedie density evaluation
gamSim

Simulate example data for GAMs
gam.outer

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

Extract the effective degrees of freedom associated with each penalty in a gam fit
gam.fit3

P-IRLS GAM estimation with GCV & UBRE/AIC or RE/ML derivative calculation
new.name

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

Alternatives to step.gam
gam.fit

GAM P-IRLS estimation with GCV/UBRE smoothness estimation
rig

Generate inverse Gaussian random deviates
smoothCon

Prediction/Construction wrapper functions for GAM smooth terms
tensor.prod.model.matrix

Utility functions for constructing tensor product smooths
pcls

Penalized Constrained Least Squares Fitting
s

Defining smooths in GAM formulae
smooth.construct.sos.smooth.spec

Splines on the sphere
summary.gam

Summary for a GAM fit
slanczos

Compute truncated eigen decomposition of a symmetric matrix
pdIdnot

Overflow proof pdMat class for multiples of the identity matrix
gam.convergence

GAM convergence and performance issues
t2

Define alternative tensor product smooths in GAM formulae
logLik.gam

Extract the log likelihood for a fitted GAM
full.score

GCV/UBRE score for use within nlm
smooth.construct.tensor.smooth.spec

Tensor product smoothing constructor
influence.gam

Extract the diagonal of the influence/hat matrix for a GAM
mgcv-package

Mixed GAM Computation Vehicle with GCV/AIC/REML smoothness estimation and GAMMs by REML/PQL
vis.gam

Visualization of GAM objects
gam.models

Specifying generalized additive models
interpret.gam

Interpret a GAM formula
magic.post.proc

Auxilliary information from magic fit
gamm

Generalized Additive Mixed Models
gam2objective

Objective functions for GAM smoothing parameter estimation
extract.lme.cov

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

QQ plots for gam model residuals
residuals.gam

Generalized Additive Model residuals
uniquecombs

find the unique rows in a matrix
cSplineDes

Evaluate cyclic B spline basis
mroot

Smallest square root of matrix
te

Define tensor product smooths in GAM formulae
smooth.construct.fs.smooth.spec

Factor smooth interactions in GAMs
spasm.construct

Experimental sparse smoothers
anova.gam

Approximate hypothesis tests related to GAM fits
gam.selection

Generalized Additive Model Selection
smooth.construct.ad.smooth.spec

Adaptive smooths in GAMs
gamObject

Fitted gam object
smooth.construct.ds.smooth.spec

Low rank Duchon 1977 splines
smooth.construct.tp.smooth.spec

Penalized thin plate regression splines in GAMs
smooth.construct.ps.smooth.spec

P-splines in GAMs
rTweedie

Generate Tweedie random deviates
fix.family.link

Modify families for use in GAM fitting and checking
ls.size

Size of list elements
get.var

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

GAM negative binomial family
exclude.too.far

Exclude prediction grid points too far from data
polys.plot

Plot geographic regions defined as polygons
random.effects

Random effects in GAMs
null.space.dimension

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

Functions for better-than-log positive parameterization
smooth.construct.cr.smooth.spec

Penalized Cubic regression splines in GAMs
formula.gam

GAM formula
Predict.matrix.cr.smooth

Predict matrix method functions
fs.test

FELSPLINE test function
columb

Reduced version of Columbus OH crime data
formXtViX

Form component of GAMM covariance matrix
magic

Stable Multiple Smoothing Parameter Estimation by GCV or UBRE
gam.side

Identifiability side conditions for a GAM
place.knots

Automatically place a set of knots evenly through covariate values
initial.sp

Starting values for multiple smoothing parameter estimation
smooth.construct.mrf.smooth.spec

Markov Random Field Smooths
predict.gam

Prediction from fitted GAM model
fixDependence

Detect linear dependencies of one matrix on another
bam.update

Update a strictly additive bam model for new data.
gam

Generalized additive models with integrated smoothness estimation
mgcv-FAQ

Frequently Asked Questions for package mgcv
mono.con

Monotonicity constraints for a cubic regression spline
print.gam

Print a Generalized Additive Model object.
smooth.construct.so.smooth.spec

Soap film smoother constructer
sp.vcov

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

GAM Tweedie family
linear.functional.terms

Linear functionals of a smooth in GAMs
model.matrix.gam

Extract model matrix from GAM fit
gam.check

Some diagnostics for a fitted gam model
gam.vcomp

Report gam smoothness estimates as variance components
Predict.matrix.soap.film

Prediction matrix for soap film smooth
pdTens

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

Extract parameter (estimator) covariance matrix from GAM fit