Companion to Applied Regression

---

Documentation for package ‘car’ version 3.1-2

• DESCRIPTION file.
• User guides, package vignettes and other documentation.
• Package NEWS.

Help Pages

A B C D E G H I L M N O P Q R S T V W Y misc

-- A --

adaptiveKernel	Nonparametric Density Estimates
Anova	Anova Tables for Various Statistical Models
Anova.aov	Anova Tables for Various Statistical Models
Anova.coxme	Anova Tables for Various Statistical Models
Anova.coxph	Anova Tables for Various Statistical Models
Anova.default	Anova Tables for Various Statistical Models
Anova.glm	Anova Tables for Various Statistical Models
Anova.lm	Anova Tables for Various Statistical Models
Anova.lme	Anova Tables for Various Statistical Models
Anova.manova	Anova Tables for Various Statistical Models
Anova.mer	Anova Tables for Various Statistical Models
Anova.merMod	Anova Tables for Various Statistical Models
Anova.mlm	Anova Tables for Various Statistical Models
Anova.multinom	Anova Tables for Various Statistical Models
Anova.polr	Anova Tables for Various Statistical Models
Anova.rlm	Anova Tables for Various Statistical Models
Anova.svycoxph	Anova Tables for Various Statistical Models
Anova.svyglm	Anova Tables for Various Statistical Models
as.data.frame.univaov	Anova Tables for Various Statistical Models
av.plot	Defunct Functions in the car Package
av.plots	Defunct Functions in the car Package
avp	Added-Variable Plots
avPlot	Added-Variable Plots
avPlot.glm	Added-Variable Plots
avPlot.lm	Added-Variable Plots
avPlot3d	Added-Variable Plots
avPlot3d.glm	Added-Variable Plots
avPlot3d.lm	Added-Variable Plots
avPlots	Added-Variable Plots
avPlots.default	Added-Variable Plots

-- B --

basicPower	Box-Cox, Box-Cox with Negatives Allowed, Yeo-Johnson and Basic Power Transformations
basicPowerAxis	Axes for Transformed Variables
bc	Defunct Functions in the car Package
bcnPower	Box-Cox, Box-Cox with Negatives Allowed, Yeo-Johnson and Basic Power Transformations
bcnPowerAxis	Axes for Transformed Variables
bcnPowerInverse	Box-Cox, Box-Cox with Negatives Allowed, Yeo-Johnson and Basic Power Transformations
bcPower	Box-Cox, Box-Cox with Negatives Allowed, Yeo-Johnson and Basic Power Transformations
bcPowerAxis	Axes for Transformed Variables
Boot	Bootstrapping for regression models
Boot.default	Bootstrapping for regression models
Boot.glm	Bootstrapping for regression models
Boot.lm	Bootstrapping for regression models
Boot.nls	Bootstrapping for regression models
bootCase	Deprecated Functions in the car Package
bootCase.glm	Deprecated Functions in the car Package
bootCase.lm	Deprecated Functions in the car Package
bootCase.nls	Deprecated Functions in the car Package
box.cox	Defunct Functions in the car Package
box.cox.powers	Defunct Functions in the car Package
box.cox.var	Defunct Functions in the car Package
box.tidwell	Defunct Functions in the car Package
boxCox	Graph the profile log-likelihood for Box-Cox transformations in 1D, or in 2D with the bcnPower family.
boxCox.bcnPowerTransform	Graph the profile log-likelihood for Box-Cox transformations in 1D, or in 2D with the bcnPower family.
boxCox.default	Graph the profile log-likelihood for Box-Cox transformations in 1D, or in 2D with the bcnPower family.
boxCox.formula	Graph the profile log-likelihood for Box-Cox transformations in 1D, or in 2D with the bcnPower family.
boxCox.lm	Graph the profile log-likelihood for Box-Cox transformations in 1D, or in 2D with the bcnPower family.
boxCox2d	Graph the profile log-likelihood for Box-Cox transformations in 1D, or in 2D with the bcnPower family.
boxCoxVariable	Constructed Variable for Box-Cox Transformation
Boxplot	Boxplots With Point Identification
Boxplot.data.frame	Boxplots With Point Identification
Boxplot.default	Boxplots With Point Identification
Boxplot.formula	Boxplots With Point Identification
Boxplot.list	Boxplots With Point Identification
Boxplot.matrix	Boxplots With Point Identification
boxTidwell	Box-Tidwell Transformations
boxTidwell.default	Box-Tidwell Transformations
boxTidwell.formula	Box-Tidwell Transformations
brief	Print Abbreviated Ouput
brief.character	Print Abbreviated Ouput
brief.data.frame	Print Abbreviated Ouput
brief.default	Print Abbreviated Ouput
brief.factor	Print Abbreviated Ouput
brief.function	Print Abbreviated Ouput
brief.glm	Print Abbreviated Ouput
brief.integer	Print Abbreviated Ouput
brief.list	Print Abbreviated Ouput
brief.lm	Print Abbreviated Ouput
brief.matrix	Print Abbreviated Ouput
brief.multinom	Print Abbreviated Ouput
brief.numeric	Print Abbreviated Ouput
brief.polr	Print Abbreviated Ouput
brief.tbl	Print Abbreviated Ouput

-- C --

car-defunct	Defunct Functions in the car Package
car-deprecated	Deprecated Functions in the car Package
car-internal.Rd	Internal Objects for the 'car' package
carHexsticker	View the Official Hex Sticker for the car Package
carPalette	Set or Retrieve 'car' Package Color Palette
carWeb	Access to the R Companion to Applied Regression Website
ceres.plot	Defunct Functions in the car Package
ceres.plots	Defunct Functions in the car Package
ceresPlot	Ceres Plots
ceresPlot.glm	Ceres Plots
ceresPlot.lm	Ceres Plots
ceresPlots	Ceres Plots
ceresPlots.default	Ceres Plots
compareCoefs	Print estimated coefficients and their standard errors in a table for several regression models.
confidence.ellipse	Defunct Functions in the car Package
confidenceEllipse	Ellipses, Data Ellipses, and Confidence Ellipses
confidenceEllipse.default	Ellipses, Data Ellipses, and Confidence Ellipses
confidenceEllipse.glm	Ellipses, Data Ellipses, and Confidence Ellipses
confidenceEllipse.lm	Ellipses, Data Ellipses, and Confidence Ellipses
confidenceEllipse.mlm	Ellipses, Data Ellipses, and Confidence Ellipses
confidenceEllipses	Ellipses, Data Ellipses, and Confidence Ellipses
confidenceEllipses.default	Ellipses, Data Ellipses, and Confidence Ellipses
confidenceEllipses.mlm	Ellipses, Data Ellipses, and Confidence Ellipses
Confint	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
Confint.boot	Methods Functions to Support 'boot' Objects
confint.boot	Methods Functions to Support 'boot' Objects
Confint.default	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
Confint.glm	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
Confint.glmerMod	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
Confint.lm	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
Confint.lme	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
Confint.lmerMod	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
Confint.multinom	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
Confint.polr	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
contr.Helmert	Functions to Construct Contrasts
contr.Sum	Functions to Construct Contrasts
contr.Treatment	Functions to Construct Contrasts
Contrasts	Functions to Construct Contrasts
cookd	Defunct Functions in the car Package
cooks.distance.influence.lme	Influence Diagnostics for Mixed-Effects Models
cr.plot	Defunct Functions in the car Package
cr.plots	Defunct Functions in the car Package
crp	Component+Residual (Partial Residual) Plots
crPlot	Component+Residual (Partial Residual) Plots
crPlot.lm	Component+Residual (Partial Residual) Plots
crPlot3d	Component+Residual (Partial Residual) Plots
crPlot3d.lm	Component+Residual (Partial Residual) Plots
crPlots	Component+Residual (Partial Residual) Plots
crPlots.default	Component+Residual (Partial Residual) Plots

-- D --

data.ellipse	Defunct Functions in the car Package
dataEllipse	Ellipses, Data Ellipses, and Confidence Ellipses
dbiwt	Nonparametric Density Estimates
deltaMethod	Estimate and Standard Error of a Nonlinear Function of Estimated Regression Coefficients
deltaMethod.coxph	Estimate and Standard Error of a Nonlinear Function of Estimated Regression Coefficients
deltaMethod.default	Estimate and Standard Error of a Nonlinear Function of Estimated Regression Coefficients
deltaMethod.lm	Estimate and Standard Error of a Nonlinear Function of Estimated Regression Coefficients
deltaMethod.lme	Estimate and Standard Error of a Nonlinear Function of Estimated Regression Coefficients
deltaMethod.lmList	Estimate and Standard Error of a Nonlinear Function of Estimated Regression Coefficients
deltaMethod.mer	Estimate and Standard Error of a Nonlinear Function of Estimated Regression Coefficients
deltaMethod.merMod	Estimate and Standard Error of a Nonlinear Function of Estimated Regression Coefficients
deltaMethod.multinom	Estimate and Standard Error of a Nonlinear Function of Estimated Regression Coefficients
deltaMethod.nls	Estimate and Standard Error of a Nonlinear Function of Estimated Regression Coefficients
deltaMethod.polr	Estimate and Standard Error of a Nonlinear Function of Estimated Regression Coefficients
deltaMethod.survreg	Estimate and Standard Error of a Nonlinear Function of Estimated Regression Coefficients
densityPlot	Nonparametric Density Estimates
densityPlot.default	Nonparametric Density Estimates
densityPlot.formula	Nonparametric Density Estimates
depan	Nonparametric Density Estimates
dfbeta.influence.lme	Influence Diagnostics for Mixed-Effects Models
dfbetaPlots	dfbeta and dfbetas Index Plots
dfbetaPlots.lm	dfbeta and dfbetas Index Plots
dfbetas.influence.lme	Influence Diagnostics for Mixed-Effects Models
dfbetasPlots	dfbeta and dfbetas Index Plots
dfbetasPlots.lm	dfbeta and dfbetas Index Plots
durbin.watson	Defunct Functions in the car Package
durbinWatsonTest	Durbin-Watson Test for Autocorrelated Errors
durbinWatsonTest.default	Durbin-Watson Test for Autocorrelated Errors
durbinWatsonTest.lm	Durbin-Watson Test for Autocorrelated Errors
dwt	Durbin-Watson Test for Autocorrelated Errors

-- E --

ellipse	Ellipses, Data Ellipses, and Confidence Ellipses
Export	Export a data frame to disk in one of many formats

-- G --

gamLine

Smoothers to Draw Lines on Scatterplots

-- H --

hccm	Heteroscedasticity-Corrected Covariance Matrices
hccm.default	Heteroscedasticity-Corrected Covariance Matrices
hccm.lm	Heteroscedasticity-Corrected Covariance Matrices
hist.boot	Methods Functions to Support 'boot' Objects

-- I --

Identify3d	Three-Dimensional Scatterplots and Point Identification
Import	Import data from many file formats
infIndexPlot	Influence Index Plot
infIndexPlot.influence.lme	Influence Index Plot
infIndexPlot.influence.merMod	Influence Index Plot
infIndexPlot.lm	Influence Index Plot
infIndexPlot.lmerMod	Influence Index Plot
influence.lme	Influence Diagnostics for Mixed-Effects Models
influence.mixed.models	Influence Diagnostics for Mixed-Effects Models
influence.plot	Regression Influence Plot
influenceIndexPlot	Influence Index Plot
influencePlot	Regression Influence Plot
influencePlot.lm	Regression Influence Plot
influencePlot.lmerMod	Regression Influence Plot
inverseResponsePlot	Inverse Response Plots to Transform the Response
inverseResponsePlot.lm	Inverse Response Plots to Transform the Response
invResPlot	Inverse Response Plots to Transform the Response
invTranEstimate	Choose a Predictor Transformation Visually or Numerically
invTranPlot	Choose a Predictor Transformation Visually or Numerically
invTranPlot.default	Choose a Predictor Transformation Visually or Numerically
invTranPlot.formula	Choose a Predictor Transformation Visually or Numerically

-- L --

levene.test	Defunct Functions in the car Package
leveneTest	Levene's Test
leveneTest.default	Levene's Test
leveneTest.formula	Levene's Test
leveneTest.lm	Levene's Test
leverage.plot	Defunct Functions in the car Package
leverage.plots	Defunct Functions in the car Package
leveragePlot	Regression Leverage Plots
leveragePlot.glm	Regression Leverage Plots
leveragePlot.lm	Regression Leverage Plots
leveragePlots	Regression Leverage Plots
lht	Test Linear Hypothesis
linear.hypothesis	Defunct Functions in the car Package
linearHypothesis	Test Linear Hypothesis
linearHypothesis.default	Test Linear Hypothesis
linearHypothesis.glm	Test Linear Hypothesis
linearHypothesis.lm	Test Linear Hypothesis
linearHypothesis.lme	Test Linear Hypothesis
linearHypothesis.lmList	Test Linear Hypothesis
linearHypothesis.mer	Test Linear Hypothesis
linearHypothesis.merMod	Test Linear Hypothesis
linearHypothesis.mlm	Test Linear Hypothesis
linearHypothesis.nlsList	Test Linear Hypothesis
linearHypothesis.polr	Test Linear Hypothesis
linearHypothesis.rlm	Test Linear Hypothesis
linearHypothesis.survreg	Test Linear Hypothesis
linearHypothesis.svyglm	Test Linear Hypothesis
loessLine	Smoothers to Draw Lines on Scatterplots
logit	Logit Transformation

-- M --

makeHypothesis	Test Linear Hypothesis
Manova	Anova Tables for Various Statistical Models
Manova.mlm	Anova Tables for Various Statistical Models
marginalModelPlot	Marginal Model Plotting
marginalModelPlots	Marginal Model Plotting
matchCoefs	Test Linear Hypothesis
matchCoefs.default	Test Linear Hypothesis
matchCoefs.lme	Test Linear Hypothesis
matchCoefs.lmList	Test Linear Hypothesis
matchCoefs.mer	Test Linear Hypothesis
matchCoefs.merMod	Test Linear Hypothesis
matchCoefs.mlm	Test Linear Hypothesis
mcPlot	Draw Linear Model Marginal and Conditional Plots in Parallel or Overlaid
mcPlot.glm	Draw Linear Model Marginal and Conditional Plots in Parallel or Overlaid
mcPlot.lm	Draw Linear Model Marginal and Conditional Plots in Parallel or Overlaid
mcPlots	Draw Linear Model Marginal and Conditional Plots in Parallel or Overlaid
mcPlots.default	Draw Linear Model Marginal and Conditional Plots in Parallel or Overlaid
mmp	Marginal Model Plotting
mmp.default	Marginal Model Plotting
mmp.glm	Marginal Model Plotting
mmp.lm	Marginal Model Plotting
mmps	Marginal Model Plotting

-- N --

ncv.test	Defunct Functions in the car Package
ncvTest	Score Test for Non-Constant Error Variance
ncvTest.glm	Score Test for Non-Constant Error Variance
ncvTest.lm	Score Test for Non-Constant Error Variance
nextBoot	Deprecated Functions in the car Package
nextBoot.lm	Deprecated Functions in the car Package
nextBoot.nls	Deprecated Functions in the car Package

-- O --

outlier.test	Defunct Functions in the car Package
outlierTest	Bonferroni Outlier Test
outlierTest.glm	Bonferroni Outlier Test
outlierTest.lm	Bonferroni Outlier Test
outlierTest.lmerMod	Bonferroni Outlier Test

-- P --

panel.car	Panel Function for Coplots
pointLabel	Label placement for points to avoid overlaps
poTest	Test for Proportional Odds in the Proportional-Odds Logistic-Regression Model
poTest.polr	Test for Proportional Odds in the Proportional-Odds Logistic-Regression Model
powerTransform	Finding Univariate or Multivariate Power Transformations
powerTransform.default	Finding Univariate or Multivariate Power Transformations
powerTransform.formula	Finding Univariate or Multivariate Power Transformations
powerTransform.lm	Finding Univariate or Multivariate Power Transformations
powerTransform.lmerMod	Finding Univariate or Multivariate Power Transformations
Predict	Model Predictions
Predict.lm	Model Predictions
print.Anova.mlm	Anova Tables for Various Statistical Models
print.boxTidwell	Box-Tidwell Transformations
print.durbinWatsonTest	Durbin-Watson Test for Autocorrelated Errors
print.linearHypothesis.mlm	Test Linear Hypothesis
print.outlierTest	Bonferroni Outlier Test
print.poTest	Test for Proportional Odds in the Proportional-Odds Logistic-Regression Model
print.S.glm	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
print.S.glmerMod	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
print.S.lm	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
print.S.lme	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
print.S.lmerMod	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
print.S.multinom	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
print.S.polr	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
print.spreadLevelPlot	Spread-Level Plots
print.summary.Anova.mlm	Anova Tables for Various Statistical Models
print.univaov	Anova Tables for Various Statistical Models
printHypothesis	Test Linear Hypothesis
probabilityAxis	Axes for Transformed Variables

-- Q --

qq.plot	Defunct Functions in the car Package
qqp	Quantile-Comparison Plot
qqPlot	Quantile-Comparison Plot
qqPlot.default	Quantile-Comparison Plot
qqPlot.formula	Quantile-Comparison Plot
qqPlot.glm	Quantile-Comparison Plot
qqPlot.lm	Quantile-Comparison Plot
quantregLine	Smoothers to Draw Lines on Scatterplots

-- R --

Recode	Recode a Variable
recode	Recode a Variable
regLine	Plot Regression Line
residCurvTest	Residual Plots for Linear and Generalized Linear Models
residCurvTest.glm	Residual Plots for Linear and Generalized Linear Models
residCurvTest.lm	Residual Plots for Linear and Generalized Linear Models
residualPlot	Residual Plots for Linear and Generalized Linear Models
residualPlot.default	Residual Plots for Linear and Generalized Linear Models
residualPlot.glm	Residual Plots for Linear and Generalized Linear Models
residualPlot.lm	Residual Plots for Linear and Generalized Linear Models
residualPlots	Residual Plots for Linear and Generalized Linear Models
residualPlots.default	Residual Plots for Linear and Generalized Linear Models
residualPlots.glm	Residual Plots for Linear and Generalized Linear Models
residualPlots.lm	Residual Plots for Linear and Generalized Linear Models

-- S --

S	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
S.data.frame	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
S.default	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
S.glm	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
S.glmerMod	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
S.lm	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
S.lme	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
S.lmerMod	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
S.multinom	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
S.polr	Modified Functions for Summarizing Linear, Generalized Linear, and Some Other Models
scatter3d	Three-Dimensional Scatterplots and Point Identification
scatter3d.default	Three-Dimensional Scatterplots and Point Identification
scatter3d.formula	Three-Dimensional Scatterplots and Point Identification
scatterplot	Enhanced Scatterplots with Marginal Boxplots, Point Marking, Smoothers, and More
scatterplot.default	Enhanced Scatterplots with Marginal Boxplots, Point Marking, Smoothers, and More
scatterplot.formula	Enhanced Scatterplots with Marginal Boxplots, Point Marking, Smoothers, and More
scatterplotMatrix	Scatterplot Matrices
scatterplotMatrix.default	Scatterplot Matrices
scatterplotMatrix.formula	Scatterplot Matrices
ScatterplotSmoothers	Smoothers to Draw Lines on Scatterplots
showLabels	Functions to Identify and Mark Extreme Points in a 2D Plot.
sigmaHat	Return the scale estimate for a regression model
sigmaHat.default	Return the scale estimate for a regression model
sigmaHat.glm	Return the scale estimate for a regression model
sigmaHat.lm	Return the scale estimate for a regression model
skewPower	Defunct Functions in the car Package
slp	Spread-Level Plots
some	Sample a Few Elements of an Object
some.data.frame	Sample a Few Elements of an Object
some.default	Sample a Few Elements of an Object
some.matrix	Sample a Few Elements of an Object
sp	Enhanced Scatterplots with Marginal Boxplots, Point Marking, Smoothers, and More
spm	Scatterplot Matrices
spread.level.plot	Defunct Functions in the car Package
spreadLevelPlot	Spread-Level Plots
spreadLevelPlot.default	Spread-Level Plots
spreadLevelPlot.formula	Spread-Level Plots
spreadLevelPlot.lm	Spread-Level Plots
strings2factors	Convert Character-String Variables in a Data Frame to Factors
strings2factors.data.frame	Convert Character-String Variables in a Data Frame to Factors
subsets	Plot Output from regsubsets Function in leaps package
subsets.regsubsets	Plot Output from regsubsets Function in leaps package
summary.Anova.mlm	Anova Tables for Various Statistical Models
summary.boot	Methods Functions to Support 'boot' Objects
symbox	Boxplots for transformations to symmetry
symbox.default	Boxplots for transformations to symmetry
symbox.formula	Boxplots for transformations to symmetry
symbox.lm	Boxplots for transformations to symmetry

-- T --

Tapply	Apply a Function to a Variable Within Factor Levels
testTransform	Likelihood-Ratio Tests for Univariate or Multivariate Power Transformations to Normality
testTransform.bcnPowerTransformlmer	Likelihood-Ratio Tests for Univariate or Multivariate Power Transformations to Normality
testTransform.lmerModpowerTransform	Likelihood-Ratio Tests for Univariate or Multivariate Power Transformations to Normality
testTransform.powerTransform	Likelihood-Ratio Tests for Univariate or Multivariate Power Transformations to Normality
tukeyNonaddTest	Residual Plots for Linear and Generalized Linear Models

-- V --

vcov.boot	Methods Functions to Support 'boot' Objects
vif	Variance Inflation Factors
vif.default	Variance Inflation Factors
vif.lm	Variance Inflation Factors
vif.merMod	Variance Inflation Factors
vif.polr	Variance Inflation Factors
vif.svyolr	Variance Inflation Factors

-- W --

wcrossprod	Weighted Matrix Crossproduct
which.names	Position of Row Names
whichNames	Position of Row Names
whichNames.data.frame	Position of Row Names
whichNames.default	Position of Row Names

-- Y --

yjPower	Box-Cox, Box-Cox with Negatives Allowed, Yeo-Johnson and Basic Power Transformations
yjPowerAxis	Axes for Transformed Variables

-- misc --

.carEnv

Internal Objects for the 'car' package