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mgcv (version 1.7-24)

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

1.7-24

License

GPL (>= 2)

Maintainer

Simon Wood

Last Published

June 5th, 2013

Functions in mgcv (1.7-24)

fix.family.link

Modify families for use in GAM fitting and checking
gamm

Generalized Additive Mixed Models
extract.lme.cov

Extract the data covariance matrix from an lme object
negbin

GAM negative binomial family
Predict.matrix

Prediction methods for smooth terms in a GAM
mgcv-FAQ

Frequently Asked Questions for package mgcv
vcov.gam

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

Interpret a GAM formula
tensor.prod.model.matrix

Utility functions for constructing tensor product smooths
initial.sp

Starting values for multiple smoothing parameter estimation
print.gam

Print a Generalized Additive Model object.
uniquecombs

find the unique rows in a matrix
smooth.construct

Constructor functions for smooth terms in a GAM
ldTweedie

Log Tweedie density evaluation
smooth.construct.re.smooth.spec

Simple random effects in GAMs
formXtViX

Form component of GAMM covariance matrix
full.score

GCV/UBRE score for use within nlm
predict.gam

Prediction from fitted GAM model
pdIdnot

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

Soap film smoother constructer
gam.vcomp

Report gam smoothness estimates as variance components
gam.fit

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

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

Smallest square root of matrix
notExp

Functions for better-than-log positive parameterization
null.space.dimension

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

Adaptive smooths in GAMs
mgcv-package

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

FELSPLINE test function
smooth.construct.fs.smooth.spec

Factor smooth interactions in GAMs
inSide

Are points inside boundary?
random.effects

Random effects in GAMs
smooth.construct.mrf.smooth.spec

Markov Random Field Smooths
concurvity

GAM concurvity measures
gamSim

Simulate example data for GAMs
smooth.construct.tensor.smooth.spec

Tensor product smoothing constructor
columb

Reduced version of Columbus OH crime data
step.gam

Alternatives to step.gam
smooth.construct.ds.smooth.spec

Low rank Duchon 1977 splines
Tweedie

GAM Tweedie family
gam.check

Some diagnostics for a fitted gam model
pen.edf

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

Obtain a name for a new variable that is not already in use
Predict.matrix.cr.smooth

Predict matrix method functions
gam2objective

Objective functions for GAM smoothing parameter estimation
in.out

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

Define tensor product smooths or tensor product interactions in GAM formulae
gam.selection

Generalized Additive Model Selection
summary.gam

Summary for a GAM fit
anova.gam

Approximate hypothesis tests related to GAM fits
bam

Generalized additive models for very large datasets
gam.fit3

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

Penalized Constrained Least Squares Fitting
notExp2

Alternative to log parameterization for variance components
rTweedie

Generate Tweedie random deviates
smooth.terms

Smooth terms in GAM
spasm.construct

Experimental sparse smoothers
predict.bam

Prediction from fitted Big Additive Model model
gam.outer

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

Fitted gam object
mono.con

Monotonicity constraints for a cubic regression spline
s

Defining smooths in GAM formulae
place.knots

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

Default GAM plotting
bam.update

Update a strictly additive bam model for new data.
exclude.too.far

Exclude prediction grid points too far from data
gam.models

Specifying generalized additive models
pdTens

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

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

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

P-splines in GAMs
logLik.gam

Extract the log likelihood for a fitted GAM
model.matrix.gam

Extract model matrix from GAM fit
vis.gam

Visualization of GAM objects
rig

Generate inverse Gaussian random deviates
gam.convergence

GAM convergence and performance issues
linear.functional.terms

Linear functionals of a smooth in GAMs
ls.size

Size of list elements
slanczos

Compute truncated eigen decomposition of a symmetric matrix
Predict.matrix.soap.film

Prediction matrix for soap film smooth
sp.vcov

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

Detect linear dependencies of one matrix on another
smooth.construct.sos.smooth.spec

Splines on the sphere
magic.post.proc

Auxilliary information from magic fit
gam.side

Identifiability side conditions for a GAM
gam.control

Setting GAM fitting defaults
qq.gam

QQ plots for gam model residuals
t2

Define alternative tensor product smooths in GAM formulae
gam

Generalized additive models with integrated smoothness estimation
get.var

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

Stable Multiple Smoothing Parameter Estimation by GCV or UBRE
polys.plot

Plot geographic regions defined as polygons
cSplineDes

Evaluate cyclic B spline basis
choose.k

Basis dimension choice for smooths
formula.gam

GAM formula
smooth.construct.cr.smooth.spec

Penalized Cubic regression splines in GAMs
smoothCon

Prediction/Construction wrapper functions for GAM smooth terms