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mgcv (version 1.7-23)

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

134,785

Version

1.7-23

License

GPL (>= 2)

Maintainer

Simon Wood

Last Published

May 20th, 2013

Functions in mgcv (1.7-23)

fix.family.link

Modify families for use in GAM fitting and checking
predict.gam

Prediction from fitted GAM model
smooth.construct.sos.smooth.spec

Splines on the sphere
inSide

Are points inside boundary?
place.knots

Automatically place a set of knots evenly through covariate values
exclude.too.far

Exclude prediction grid points too far from data
gam

Generalized additive models with integrated smoothness estimation
full.score

GCV/UBRE score for use within nlm
gam2objective

Objective functions for GAM smoothing parameter estimation
mgcv-package

Mixed GAM Computation Vehicle with GCV/AIC/REML smoothness estimation and GAMMs by REML/PQL
pdTens

Functions implementing a pdMat class for tensor product smooths
smooth.construct

Constructor functions for smooth terms in a GAM
smooth.construct.tensor.smooth.spec

Tensor product smoothing constructor
notExp

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

Simple random effects in GAMs
magic.post.proc

Auxilliary information from magic fit
influence.gam

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

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

GAM formula
Predict.matrix.cr.smooth

Predict matrix method functions
notExp2

Alternative to log parameterization for variance components
anova.gam

Approximate hypothesis tests related to GAM fits
cSplineDes

Evaluate cyclic B spline basis
vcov.gam

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

Extract model matrix from GAM fit
smoothCon

Prediction/Construction wrapper functions for GAM smooth terms
pen.edf

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

Smooth terms in GAM
qq.gam

QQ plots for gam model residuals
uniquecombs

find the unique rows in a matrix
pdIdnot

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

Penalized Cubic regression splines in GAMs
gam.fit3

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

Form component of GAMM covariance matrix
initial.sp

Starting values for multiple smoothing parameter estimation
rig

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

Soap film smoother constructer
gam.check

Some diagnostics for a fitted gam model
mroot

Smallest square root of matrix
print.gam

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

Adaptive smooths in GAMs
columb

Reduced version of Columbus OH crime data
gam.convergence

GAM convergence and performance issues
plot.gam

Default GAM plotting
vis.gam

Visualization of GAM objects
extract.lme.cov

Extract the data covariance matrix from an lme object
mgcv-FAQ

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

P-splines in GAMs
pcls

Penalized Constrained Least Squares Fitting
random.effects

Random effects in GAMs
gam.vcomp

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

Prediction matrix for soap film smooth
fs.test

FELSPLINE test function
logLik.gam

Extract the log likelihood for a fitted GAM
ldTweedie

Log Tweedie density evaluation
choose.k

Basis dimension choice for smooths
gam.outer

Minimize GCV or UBRE score of a GAM using `outer' iteration
smooth.construct.tp.smooth.spec

Penalized thin plate regression splines in GAMs
s

Defining smooths in GAM formulae
predict.bam

Prediction from fitted Big Additive Model model
Tweedie

GAM Tweedie family
get.var

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

Extract smoothing parameter estimator covariance matrix from (RE)ML GAM fit
smooth.construct.ds.smooth.spec

Low rank Duchon 1977 splines
gam.control

Setting GAM fitting defaults
summary.gam

Summary for a GAM fit
bam.update

Update a strictly additive bam model for new data.
fixDependence

Detect linear dependencies of one matrix on another
gamSim

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

Factor smooth interactions in GAMs
bam

Generalized additive models for very large datasets
new.name

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

Generalized Additive Model Selection
gam.side

Identifiability side conditions for a GAM
slanczos

Compute truncated eigen decomposition of a symmetric matrix
gam.models

Specifying generalized additive models
concurvity

GAM concurvity measures
gamObject

Fitted gam object
rTweedie

Generate Tweedie random deviates
in.out

Which of a set of points lie within a polygon defined region
linear.functional.terms

Linear functionals of a smooth in GAMs
null.space.dimension

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

GAM negative binomial family
polys.plot

Plot geographic regions defined as polygons
mono.con

Monotonicity constraints for a cubic regression spline
Predict.matrix

Prediction methods for smooth terms in a GAM
spasm.construct

Experimental sparse smoothers
tensor.prod.model.matrix

Utility functions for constructing tensor product smooths
ls.size

Size of list elements
t2

Define alternative tensor product smooths in GAM formulae
step.gam

Alternatives to step.gam
gam.fit

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

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

Markov Random Field Smooths
residuals.gam

Generalized Additive Model residuals
interpret.gam

Interpret a GAM formula
gamm

Generalized Additive Mixed Models