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! Logical Operators
!= Relational Operators
$ Extract or Replace Parts of an Object
%% Arithmetic Operators
%*% Matrix Multiplication
%/% Arithmetic Operators
%in% Value Matching
%o% Outer Product of Arrays
%x% Kronecker products on arrays
& Logical Operators
&& Logical Operators
( Parentheses and Braces
* Arithmetic Operators
*.difftime Time Intervals
+ Arithmetic Operators
+.POSIXt Date-Time Classes
- Arithmetic Operators
-.POSIXt Date-Time Classes
-> Assignment Operators
->> Assignment Operators
.Autoloaded Loading and Listing of Packages
.AutoloadEnv On-demand Loading of Packages
.BaseNamespaceEnv Environment Access
.C Foreign Function Interface
.Call Foreign Function Interface
.Class Group Generic Functions
.Deprecated Deprecated Functions
.Device Control Multiple Devices
.Devices Control Multiple Devices
.dynLibs Loading Shared Libraries
.External Foreign Function Interface
.find.package Loading and Listing of Packages
.First Initialization at Start of an R Session
.First.lib Loading and Listing of Packages
.First.sys Initialization at Start of an R Session
.Fortran Foreign Function Interface
.Generic Group Generic Functions
.GlobalEnv Environment Access
.Group Group Generic Functions
.handleSimpleError Condition Handling and Recovery
.helpForCall Documentation
.Internal Call an Internal Function
.isMethodsDispatchOn Class Methods
.Last Terminate an R Session
.Last.lib Loading and Listing of Packages
.Last.value Value of Last Evaluated Expression
.leap.seconds Date-Time Classes
.libPaths Loading and Listing of Packages
.Library Loading and Listing of Packages
.Machine Numerical Characteristics of the Machine
.Method Group Generic Functions
.noGenerics Loading and Listing of Packages
.NotYetImplemented Not Yet Implemented Functions and Unused Arguments
.NotYetUsed Not Yet Implemented Functions and Unused Arguments
.Options Options Settings
.packages Loading and Listing of Packages
.Pars Set or Query Graphical Parameters
.path.package Loading and Listing of Packages
.Platform Platform Specific Variables
.PostScript.Options PostScript Graphics
.Primitive Call a ``Primitive'' Internal Function
.primTrace Interactive Tracing and Debugging of Calls to a Function or Method
.primUntrace Interactive Tracing and Debugging of Calls to a Function or Method
.ps.prolog PostScript Graphics
.Random.seed Random Number Generation
.Renviron Initialization at Start of an R Session
.Rprofile Initialization at Start of an R Session
.Script Scripting Language Interface
.signalSimpleWarning Condition Handling and Recovery
.subset Extract or Replace Parts of an Object
.subset2 Extract or Replace Parts of an Object
.Traceback Print Call Stack of Last Error
.tryHelp Documentation
/ Arithmetic Operators
/.difftime Time Intervals
: Sequence Generation
:: Double Colon and Triple Colon Operators
::: Double Colon and Triple Colon Operators
< Relational Operators
<= Relational Operators
= Assignment Operators
== Relational Operators
> Relational Operators
>= Relational Operators
? Documentation
@ Extract Slots

-- A --

abbreviate Abbreviate Strings
abline Add a Straight Line to a Plot
abs Miscellaneous Mathematical Functions
acos Trigonometric Functions
acosh Hyperbolic Functions
add.scope Compute Allowed Changes in Adding to or Dropping from a Formula
add1 Add or Drop All Possible Single Terms to a Model
addTaskCallback Add or remove a top-level task callback
aggregate Compute Summary Statistics of Data Subsets
agrep Approximate String Matching (Fuzzy Matching)
AIC Akaike's An Information Criterion
airmiles Passenger Miles on Commercial US Airlines, 1937-1960
airquality New York Air Quality Measurements
alias Find Aliases (Dependencies) in a Model
alist Lists - Generic and Dotted Pairs
all Are All Values True?
all.equal Test if Two Objects are (Nearly) Equal
all.equal.POSIXct Date-Time Classes
all.names Find All Names in an Expression
all.vars Find All Names in an Expression
anova Anova Tables
anova.glm Analysis of Deviance for Generalized Linear Model Fits
anova.glmlist Analysis of Deviance for Generalized Linear Model Fits
anova.lm ANOVA for Linear Model Fits
anova.lmlist ANOVA for Linear Model Fits
anova.mlm ANOVA for Linear Model Fits
anovalist.lm Deprecated Functions
anscombe Anscombe's Quartet of ``Identical'' Simple Linear Regressions
any Are Some Values True?
aov Fit an Analysis of Variance Model
aperm Array Transposition
append Vector Merging
apply Apply Functions Over Array Margins
approx Interpolation Functions
approxfun Interpolation Functions
apropos Find Objects by (Partial) Name
Arg Complex Vectors
args Argument List of a Function
Arith Group Generic Functions
Arithmetic Arithmetic Operators
array Multi-way Arrays
arrows Add Arrows to a Plot
as.array Multi-way Arrays
as.call Function Calls
as.character Character Vectors
as.character.condition Condition Handling and Recovery
as.character.default Character Vectors
as.character.error Condition Handling and Recovery
as.character.factor Character Vectors
as.character.octmode Display Numbers in Octal
as.character.POSIXt Date-time Conversion Functions to and from Character
as.complex Complex Vectors
as.data.frame Coerce to a Data Frame
as.data.frame.logLik Extract Log-Likelihood
as.data.frame.matrix Coerce to a Data Frame
as.data.frame.model.matrix Coerce to a Data Frame
as.data.frame.numeric Coerce to a Data Frame
as.data.frame.ordered Coerce to a Data Frame
as.data.frame.POSIXct Date-Time Classes
as.data.frame.POSIXlt Date-Time Classes
as.data.frame.table Cross Tabulation and Table Creation
as.data.frame.ts Coerce to a Data Frame
as.data.frame.vector Coerce to a Data Frame
as.difftime Time Intervals
as.double Double Precision Vectors
as.environment Coerce to an Environment Object
as.expression Unevaluated Expressions
as.factor Factors
as.formula Model Formulae
as.function Convert Object to Function
as.integer Integer Vectors
as.list Lists - Generic and Dotted Pairs
as.logical Logical Vectors
as.matrix Matrices
as.matrix.noquote Class for ``no quote'' Printing of Character Strings
as.matrix.POSIXlt Date-Time Classes
as.name Variable Names or Symbols, respectively
as.null The Null Object
as.numeric Numeric Vectors
as.ordered Factors
as.pairlist Lists - Generic and Dotted Pairs
as.POSIXct Date-time Conversion Functions
as.POSIXlt Date-time Conversion Functions
as.qr The QR Decomposition of a Matrix
as.real Real Vectors
as.single Double Precision Vectors
as.symbol Variable Names or Symbols, respectively
as.table Cross Tabulation and Table Creation
as.table.ftable Manipulate Flat Contingency Tables
as.ts Time-Series Objects
as.vector Vectors
asin Trigonometric Functions
asinh Hyperbolic Functions
AsIs Inhibit Interpretation/Conversion of Objects
assign Assign a Value to a Name
assocplot Association Plots
atan Trigonometric Functions
atan2 Trigonometric Functions
atanh Hyperbolic Functions
attach Attach Set of R Objects to Search Path
attenu The Joyner-Boore Attenuation Data
attitude The Chatterjee-Price Attitude Data
attr Object Attributes
attr.all.equal Test if Two Objects are (Nearly) Equal
attributes Object Attribute Lists
autoload On-demand Loading of Packages
autoloader On-demand Loading of Packages
ave Group Averages Over Level Combinations of Factors
axis Add an Axis to a Plot
axis.POSIXct Date-time Plotting Functions
axTicks Compute Axis Tickmark Locations

-- B --

backsolve Solve an Upper or Lower Triangular System
barplot Bar Plots
basename Manipulate File Paths
BATCH Batch Execution of R
Bessel Bessel Functions
bessel Bessel Functions
besselI Bessel Functions
besselJ Bessel Functions
besselK Bessel Functions
besselY Bessel Functions
Beta The Beta Distribution
beta Special Functions of Mathematics
Binomial The Binomial Distribution
binomial Family Objects for Models
bitmap Graphics Device for Bitmap Files via GhostScript
body Access to and Manipulation of the Body of a Function
box Draw a Box around a Plot
boxplot Box Plots
boxplot.stats Box Plot Statistics
bquote Partial substitution in expressions
break Control Flow
browseEnv Browse Objects in Environment
browser Environment Browser
browseURL Load URL into a WWW Browser
bug.report Send a Bug Report
build Utilities for Building and Checking Add-on Packages
builtins Returns the names of all built-in objects
bw.bcv Bandwidth Selectors for Kernel Density Estimation
bw.nrd Bandwidth Selectors for Kernel Density Estimation
bw.nrd0 Bandwidth Selectors for Kernel Density Estimation
bw.SJ Bandwidth Selectors for Kernel Density Estimation
bw.ucv Bandwidth Selectors for Kernel Density Estimation
bxp Box Plots from Summaries
by Apply a Function to a Data Frame split by Factors
bzfile Functions to Manipulate Connections

-- C --

C Sets Contrasts for a Factor
c Combine Values into a Vector or List
c.noquote Class for ``no quote'' Printing of Character Strings
c.POSIXct Date-Time Classes
c.POSIXlt Date-Time Classes
call Function Calls
capabilities Report Capabilities of this Build of R
capture.output Send output to a character string or file
cars Speed and Stopping Distances of Cars
case.names Case and Variable Names of Fitted Models
casefold Character Translation and Casefolding
cat Concatenate and Print
Cauchy The Cauchy Distribution
cbind Combine R Objects by Rows or Columns
cbind.ts Time-Series Objects
ceiling Rounding of Numbers
char.expand Expand a String with Respect to a Target Table
character Character Vectors
charmatch Partial String Matching
chartr Character Translation and Casefolding
check Utilities for Building and Checking Add-on Packages
check.options Set Options with Consistency Checks
chickwts Chicken Weights by Feed Type
Chisquare The (non-central) Chi-Squared Distribution
chol The Choleski Decomposition
chol2inv Inverse from Choleski Decomposition
choose Special Functions of Mathematics
chull Compute Convex Hull of a Set of Points
citation Citing R in Publications
class Object Classes
close Functions to Manipulate Connections
close.screen Creating and Controlling Multiple Screens on a Single Device
close.socket Close a Socket
closeAllConnections Display Connections
cm Graphical Units
cm.colors Color Palettes
co.intervals Conditioning Plots
co2 Mauna Loa Atmospheric CO2 Concentration
codes Deprecated Functions
codes-deprecated Factor Codes
codes.factor Deprecated Functions
codes.ordered Deprecated Functions
coef Extract Model Coefficients
coefficients Extract Model Coefficients
col Column Indexes
col2rgb Color to RGB Conversion
colMeans Form Row and Column Sums and Means
colnames Row and Column Names
colors Color Names
colours Color Names
colSums Form Row and Column Sums and Means
commandArgs Extract Command Line Arguments
comment Query or Set a `Comment' Attribute
Compare Group Generic Functions
compareVersion Package Management Tools
Comparison Relational Operators
COMPILE Compile Files for Use with R
complete.cases Find Complete Cases
Complex Group Generic Functions
complex Complex Vectors
computeRestarts Condition Handling and Recovery
conditionCall Condition Handling and Recovery
conditionMessage Condition Handling and Recovery
confint Confidence Intervals for Model Parameters
conflicts Search for Masked Objects on the Search Path
Conj Complex Vectors
connection Functions to Manipulate Connections
connections Functions to Manipulate Connections
constrOptim Linearly constrained optimisation
contour Display Contours
contr.helmert Contrast Matrices
contr.poly Contrast Matrices
contr.sum Contrast Matrices
contr.treatment Contrast Matrices
contrasts Get and Set Contrast Matrices
contrib.url Download Packages from CRAN
contributors R Project Contributors
Control Control Flow
convolve Fast Convolution
cooks.distance Regression Deletion Diagnostics
coplot Conditioning Plots
copyright Copyrights of Files Used to Build R
copyrights Copyrights of Files Used to Build R
cor Correlation, Variance and Covariance (Matrices)
cos Trigonometric Functions
cosh Hyperbolic Functions
count.fields Count the Number of Fields per Line
cov Correlation, Variance and Covariance (Matrices)
cov.wt Weighted Covariance Matrices
cov2cor Correlation, Variance and Covariance (Matrices)
covratio Regression Deletion Diagnostics
CRAN.packages Download Packages from CRAN
crossprod Matrix Crossproduct
cummax Cumulative Sums, Products, and Extremes
cummin Cumulative Sums, Products, and Extremes
cumprod Cumulative Sums, Products, and Extremes
cumsum Cumulative Sums, Products, and Extremes
curve Draw Function Plots
cut Convert Numeric to Factor
cut.POSIXt Convert a Date-Time Object to a Factor
cycle Sampling Times of Time Series

-- D --

D Symbolic and Algorithmic Derivatives of Simple Expressions
data Data Sets
data.class Object Classes
data.entry Spreadsheet Interface for Entering Data
data.frame Data Frames
data.matrix Data Frame to Numeric Matrix
dataentry Spreadsheet Interface for Entering Data
date System Date and Time
DateTimeClasses Date-Time Classes
dbeta The Beta Distribution
dbinom The Binomial Distribution
dcauchy The Cauchy Distribution
dchisq The (non-central) Chi-Squared Distribution
de Spreadsheet Interface for Entering Data
debug Debug a function
debugger Post-Mortem Debugging
delay Delay Evaluation
delete.response Modify Terms Objects
deltat Sampling Times of Time Series
demo Demonstrations of R Functionality
density Kernel Density Estimation
deparse Expression Deparsing
Deprecated Deprecated Functions
deriv Symbolic and Algorithmic Derivatives of Simple Expressions
deriv3 Symbolic and Algorithmic Derivatives of Simple Expressions
det Calculate the Determinant of a Matrix
detach Detach Objects from the Search Path
determinant Calculate the Determinant of a Matrix
dev.control Copy Graphics Between Multiple Devices
dev.copy Copy Graphics Between Multiple Devices
dev.copy2eps Copy Graphics Between Multiple Devices
dev.cur Control Multiple Devices
dev.interactive List of Graphical Devices
dev.list Control Multiple Devices
dev.next Control Multiple Devices
dev.off Control Multiple Devices
dev.prev Control Multiple Devices
dev.print Copy Graphics Between Multiple Devices
dev.set Control Multiple Devices
dev2bitmap Graphics Device for Bitmap Files via GhostScript
deviance Model Deviance
device List of Graphical Devices
Devices List of Graphical Devices
dexp The Exponential Distribution
df The F Distribution
df.residual Residual Degrees-of-Freedom
dfbeta Regression Deletion Diagnostics
dfbetas Regression Deletion Diagnostics
dffits Regression Deletion Diagnostics
dgamma The Gamma Distribution
dgeom The Geometric Distribution
dget Write an Internal Object to a File
dhyper The Hypergeometric Distribution
diag Matrix Diagonals
diff Lagged Differences
diff.ts Methods for Time Series Objects
difftime Time Intervals
digamma Special Functions of Mathematics
dim Dimensions of an Object
dimnames Dimnames of an Object
dir List the Files in a Directory/Folder
dir.create File Manipulation
dirname Manipulate File Paths
discoveries Yearly Numbers of Important Discoveries
dlnorm The Log Normal Distribution
dlogis The Logistic Distribution
dmultinom The Multinomial Distribution
dnbinom The Negative Binomial Distribution
dnorm The Normal Distribution
do.call Execute a Function Call
dotchart Cleveland Dot Plots
double Double Precision Vectors
download.file Download File from the Internet
download.packages Download Packages from CRAN
dpois The Poisson Distribution
dput Write an Internal Object to a File
dQuote Quote Text
drop Drop Redundant Extent Information
drop.scope Compute Allowed Changes in Adding to or Dropping from a Formula
drop.terms Modify Terms Objects
drop1 Add or Drop All Possible Single Terms to a Model
dsignrank Distribution of the Wilcoxon Signed Rank Statistic
dt The Student t Distribution
dummy.coef Extract Coefficients in Original Coding
dump Text Representations of R Objects
dump.frames Post-Mortem Debugging
dunif The Uniform Distribution
duplicated Determine Duplicate Elements
dweibull The Weibull Distribution
dwilcox Distribution of the Wilcoxon Rank Sum Statistic
dyn.load Foreign Function Interface
dyn.unload Foreign Function Interface

-- E --

edit Invoke a Text Editor
edit.data.frame Edit Data Frames and Matrices
edit.default Invoke a Text Editor
edit.matrix Edit Data Frames and Matrices
eff.aovlist Compute Efficiencies of Multistratum Analysis of Variance
effects Effects from Fitted Model
eigen Spectral Decomposition of a Matrix
else Control Flow
emacs Invoke a Text Editor
end Encode the Terminal Times of Time Series
environment Environment Access
erase.screen Creating and Controlling Multiple Screens on a Single Device
Error Fit an Analysis of Variance Model
esoph Smoking, Alcohol and (O)esophageal Cancer
euro Conversion Rates of Euro Currencies
eurodist Distances Between European Cities
eval Evaluate an (Unevaluated) Expression
evalq Evaluate an (Unevaluated) Expression
example Run an Examples Section from the Online Help
exists Is an Object Defined?
exp Logarithms and Exponentials
expand.grid Create a Data Frame from All Combinations of Factors
expand.model.frame Add new variables to a model frame
expm1 Logarithms and Exponentials
Exponential The Exponential Distribution
expression Unevaluated Expressions
Extract Extract or Replace Parts of an Object
extractAIC Extract AIC from a Fitted Model

-- F --

F Logical Vectors
factor Factors
factor.scope Compute Allowed Changes in Adding to or Dropping from a Formula
faithful Old Faithful Geyser Data
FALSE Logical Vectors
family Family Objects for Models
family.glm Accessing Generalized Linear Model Fits
family.lm Accessing Linear Model Fits
FDist The F Distribution
fft Fast Discrete Fourier Transform
fifo Functions to Manipulate Connections
file Functions to Manipulate Connections
file.access Ascertain File Accessibility
file.append File Manipulation
file.choose Choose a File Interactively
file.copy File Manipulation
file.create File Manipulation
file.exists File Manipulation
file.info Extract File Information
file.path Construct Path to File
file.remove File Manipulation
file.rename File Manipulation
file.show Display One or More Files
file.symlink File Manipulation
files File Manipulation
filled.contour Level (Contour) Plots
find Find Objects by (Partial) Name
findInterval Find Interval Numbers or Indices
findRestart Condition Handling and Recovery
fitted Extract Model Fitted Values
fivenum Tukey Five-Number Summaries
fix Fix an Object
fixInNamespace Utility functions for Developing Namespaces
floor Rounding of Numbers
flush Functions to Manipulate Connections
for Control Flow
force Force evaluation of an Argument
Foreign Foreign Function Interface
Formaldehyde Determination of Formaldehyde
formals Access to and Manipulation of the Formal Arguments
format Encode in a Common Format
format.char Formatting Using C-style Formats
format.data.frame Encode in a Common Format
format.default Encode in a Common Format
format.factor Encode in a Common Format
format.info format(.) Information
format.octmode Display Numbers in Octal
format.POSIXct Date-time Conversion Functions to and from Character
format.POSIXlt Date-time Conversion Functions to and from Character
format.pval Encode in a Common Format
formatC Formatting Using C-style Formats
formatDL Format Description Lists
formula Model Formulae
formula.lm Accessing Linear Model Fits
formula.terms Model Formulae
forwardsolve Solve an Upper or Lower Triangular System
fourfoldplot Fourfold Plots
frame Create / Start a New Plot Frame
freeny Freeny's Revenue Data
frequency Sampling Times of Time Series
ftable Flat Contingency Tables
ftable.formula Formula Notation for Flat Contingency Tables
function Function Definition
fuzzy matching Approximate String Matching (Fuzzy Matching)

-- G --

Gamma Family Objects for Models
gamma Special Functions of Mathematics
gammaCody Bessel Functions
GammaDist The Gamma Distribution
gaussian Family Objects for Models
gc Garbage Collection
gc.time Report Time Spent in Garbage Collection
gcinfo Garbage Collection
gctorture Torture Garbage Collector
Geometric The Geometric Distribution
get Return a Variable's Value
getAllConnections Display Connections
getAnywhere Retrieve an R Object, Including from a Namespace
getCConverterDescriptions Management of .C argument conversion list
getCConverterStatus Management of .C argument conversion list
getConnection Display Connections
geterrmessage Stop Function Execution
getFromNamespace Utility functions for Developing Namespaces
getNativeSymbolInfo Obtain a description of a native (C/Fortran) symbol
getNumCConverters Management of .C argument conversion list
getOption Options Settings
getS3method Get An S3 Method
getTaskCallbackNames Query the names of the current internal top-level task callbacks
getwd Get or Set Working Directory
gl Generate Factor Levels
glm Fitting Generalized Linear Models
glm.control Auxiliary for Controlling GLM Fitting
glm.fit Fitting Generalized Linear Models
glm.fit.null Deprecated Functions
globalenv Environment Access
GNOME GNOME Desktop Graphics Device
gnome GNOME Desktop Graphics Device
graphics.off Control Multiple Devices
gray Gray Level Specification
grep Pattern Matching and Replacement
grey Gray Level Specification
grid Add Grid to a Plot
gsub Pattern Matching and Replacement
gzcon (De)compress I/O Through Connections
gzfile Functions to Manipulate Connections

-- H --

HairEyeColor Hair and Eye Color of Statistics Students
hasTsp Tsp Attribute of Time-Series-like Objects
hat Regression Deletion Diagnostics
hatvalues Regression Deletion Diagnostics
heat.colors Color Palettes
help Documentation
help.search Search the Help System
help.start Hypertext Documentation
Hershey Hershey Vector Fonts in R
hist Histograms
hist.POSIXt Histogram of a Date-Time Object
history Load or Save or Display the Commands History
hsv HSV Color Specification
Hypergeometric The Hypergeometric Distribution

-- I --

I Inhibit Interpretation/Conversion of Objects
identical Test Objects for Exact Equality
identify Identify Points in a Scatter Plot
if Control Flow
ifelse Conditional Element Selection
Im Complex Vectors
image Display a Color Image
index.search Search Indices for Help Files
Inf Finite, Infinite and NaN Numbers
infert Infertility after Spontaneous and Induced Abortion
influence Regression Diagnostics
influence.measures Regression Deletion Diagnostics
inherits Object Classes
InsectSprays Effectiveness of Insect Sprays
INSTALL Install Add-on Packages
install.packages Download Packages from CRAN
installed.packages Download Packages from CRAN
integer Integer Vectors
integrate Integration of One-Dimensional Functions
interaction Compute Factor Interactions
interaction.plot Two-way Interaction Plot
interactive Is R Running Interactively?
InternalMethods Internal Generic Functions
intersect Set Operations
inverse.gaussian Family Objects for Models
inverse.rle Run Length Encoding
invisible Change the Print Mode to Invisible
invokeRestart Condition Handling and Recovery
invokeRestartInteractively Condition Handling and Recovery
IQR The Interquartile Range
iris Edgar Anderson's Iris Data
iris3 Edgar Anderson's Iris Data
is.array Multi-way Arrays
is.atomic Is an Object Atomic or Recursive?
is.call Function Calls
is.character Character Vectors
is.complex Complex Vectors
is.data.frame Coerce to a Data Frame
is.double Double Precision Vectors
is.element Set Operations
is.empty.model Check if a Model is Empty
is.environment Environment Access
is.expression Unevaluated Expressions
is.factor Factors
is.finite Finite, Infinite and NaN Numbers
is.function Is an Object of Type Function?
is.infinite Finite, Infinite and NaN Numbers
is.integer Integer Vectors
is.language Is an Object a Language Object?
is.list Lists - Generic and Dotted Pairs
is.loaded Foreign Function Interface
is.logical Logical Vectors
is.matrix Matrices
is.mts Time-Series Objects
is.na Not Available / ``Missing'' Values
is.na.POSIXlt Date-Time Classes
is.name Variable Names or Symbols, respectively
is.nan Finite, Infinite and NaN Numbers
is.null The Null Object
is.numeric Numeric Vectors
is.object Is an Object ``internally classed''?
is.ordered Factors
is.pairlist Lists - Generic and Dotted Pairs
is.qr The QR Decomposition of a Matrix
is.R Are we using R, rather than S?
is.real Real Vectors
is.recursive Is an Object Atomic or Recursive?
is.single Is an Object of Single Precision Type?
is.symbol Variable Names or Symbols, respectively
is.table Cross Tabulation and Table Creation
is.ts Time-Series Objects
is.unsorted Sorting or Ordering Vectors
is.vector Vectors
isIncomplete Functions to Manipulate Connections
islands Areas of the World's Major Landmasses
ISOdate Date-time Conversion Functions to and from Character
ISOdatetime Date-time Conversion Functions to and from Character
ISOLatin1 Functions to Manipulate Connections
isOpen Functions to Manipulate Connections
isRestart Condition Handling and Recovery
isSeekable Functions to Reposition Connections

-- J --

Japanese Japanese characters in R
jitter Add `Jitter' (Noise) to Numbers
jpeg JPEG and PNG graphics devices
julian Extract Parts of a POSIXt Object

-- K --

kappa Estimate the Condition Number
kronecker Kronecker products on arrays

-- L --

La.chol The Choleski Decomposition
La.chol2inv Inverse from Choleski Decomposition
La.eigen Spectral Decomposition of a Matrix
La.svd Singular Value Decomposition of a Matrix
labels Find Labels from Object
lapply Apply a Function over a List or Vector
layout Specifying Complex Plot Arrangements
lbeta Special Functions of Mathematics
lchoose Special Functions of Mathematics
lcm Specifying Complex Plot Arrangements
legend Add Legends to Plots
length Length of a Vector or List
LETTERS Built-in Constants
letters Built-in Constants
levels Levels Attributes
lgamma Special Functions of Mathematics
library Loading and Listing of Packages
library.dynam Loading Shared Libraries
licence The R License Terms
license The R License Terms
LifeCycleSavings Intercountry Life-Cycle Savings Data
limitedLabels Browsing after an Error
lines Add Connected Line Segments to a Plot
lines.formula Formula Notation for Scatterplots
lines.histogram Plot Histograms
lines.ts Plotting Time-Series Objects
LINK Create Executable Programs
list Lists - Generic and Dotted Pairs
list.files List the Files in a Directory/Folder
lm Fitting Linear Models
lm.fit Fitter Functions for Linear Models
lm.fit.null Deprecated Functions
lm.influence Regression Diagnostics
lm.wfit Fitter Functions for Linear Models
lm.wfit.null Deprecated Functions
load Reload Saved Datasets
loadhistory Load or Save or Display the Commands History
loadURL Reload Saved Datasets
local Evaluate an (Unevaluated) Expression
localeconv Find Details of the Numerical Representations in the Current Locale
locales Query or Set Aspects of the Locale
locator Graphical Input
log Logarithms and Exponentials
log10 Logarithms and Exponentials
log1p Logarithms and Exponentials
log2 Logarithms and Exponentials
logb Logarithms and Exponentials
Logic Logical Operators
logical Logical Vectors
Logistic The Logistic Distribution
logLik Extract Log-Likelihood
logLik.glm Extract Log-Likelihood from an glm Object
logLik.lm Extract Log-Likelihood from an lm Object
loglin Fitting Log-Linear Models
Lognormal The Log Normal Distribution
longley Longley's Economic Regression Data
lower.tri Lower and Upper Triangular Part of a Matrix
lowess Scatter Plot Smoothing
ls List Objects
ls.diag Compute Diagnostics for `lsfit' Regression Results
ls.print Print `lsfit' Regression Results
ls.str Compactly Display the Structure of an Arbitrary R Object
lsf.str Compactly Display the Structure of an Arbitrary R Object
lsfit Find the Least Squares Fit

-- M --

MacRoman Functions to Manipulate Connections
mad Median Absolute Deviation
mahalanobis Mahalanobis Distance
make.link Create a Link for GLM families
make.names Make Syntactically Valid Names
make.packages.html Update HTML documentation files
make.socket Create a Socket Connection
make.unique Make Character Strings Unique
makepredictcall Utility Function for Safe Prediction
makepredictcall.poly Compute Orthogonal Polynomials
manglePackageName Mangle the Package Name
manova Multivariate Analysis of Variance
mapply Apply a function to multiple list or vector arguments
margin.table Compute table margin
mat.or.vec Create a Matrix or a Vector
match Value Matching
match.arg Argument Verification Using Partial Matching
match.call Argument Matching
match.fun Function Verification for ``Function Variables''
Math Group Generic Functions
Math.difftime Time Intervals
Math.factor Group Generic Functions
Math.POSIXlt Date-Time Classes
Math.POSIXt Date-Time Classes
Math2 Group Generic Functions
matlines Plot Columns of Matrices
matmult Matrix Multiplication
matplot Plot Columns of Matrices
matpoints Plot Columns of Matrices
matrix Matrices
max Maxima and Minima
max.col Find Maximum Position in Matrix
mean Arithmetic Mean
mean.POSIXct Date-Time Classes
mean.POSIXlt Date-Time Classes
median Median Value
mem.limits Memory Available for Data Storage
Memory Memory Available for Data Storage
memory.profile Profile the Usage of Cons Cells
menu Menu Interaction Function
merge Merge Two Data Frames
methods List Methods for S3 Generic Functions or Classes
min Maxima and Minima
missing Does a Formal Argument have a Value?
Mod Complex Vectors
mode The (Storage) Mode of an Object
model.extract Extract Components from a Model Frame
model.frame Extracting the ``Environment'' of a Model Formula
model.matrix Construct Design Matrices
model.offset Extract Components from a Model Frame
model.response Extract Components from a Model Frame
model.tables Compute Tables of Results from an Aov Model Fit
model.weights Extract Components from a Model Frame
month.abb Built-in Constants
month.name Built-in Constants
months Extract Parts of a POSIXt Object
morley Michaelson-Morley Speed of Light Data
mosaicplot Mosaic Plots
mtcars Motor Trend Car Road Tests
mtext Write Text into the Margins of a Plot
Multinomial The Multinomial Distribution
mvfft Fast Discrete Fourier Transform

-- N --

n2mfrow Compute Default mfrow From Number of Plots
NA Not Available / ``Missing'' Values
na.action NA Action
na.exclude Handle Missing Values in Objects
na.fail Handle Missing Values in Objects
na.omit Handle Missing Values in Objects
na.omit.ts Methods for Time Series Objects
na.pass Handle Missing Values in Objects
name Variable Names or Symbols, respectively
names The Names Attribute of an Object
NaN Finite, Infinite and NaN Numbers
napredict Adjust for Missing Values
naprint Adjust for Missing Values
naresid Adjust for Missing Values
nargs The Number of Arguments to a Function
native.enc Functions to Manipulate Connections
nchar Count the Number of Characters
nclass.FD Compute the Number of Classes for a Histogram
nclass.scott Compute the Number of Classes for a Histogram
nclass.Sturges Compute the Number of Classes for a Histogram
NCOL The Number of Rows/Columns of an Array
ncol The Number of Rows/Columns of an Array
NegBinomial The Negative Binomial Distribution
new.env Environment Access
newestVersion Package Management Tools
next Control Flow
NextMethod Class Methods
nextn Highly Composite Numbers
nhtemp Average Yearly Temperatures in New Haven
nlevels The Number of Levels of a Factor
nlm Non-Linear Minimization
noquote Class for ``no quote'' Printing of Character Strings
Normal The Normal Distribution
NotYetImplemented Not Yet Implemented Functions and Unused Arguments
NotYetUsed Not Yet Implemented Functions and Unused Arguments
NROW The Number of Rows/Columns of an Array
nrow The Number of Rows/Columns of an Array
nsl Look up the IP Address by Hostname
NULL The Null Object
numeric Numeric Vectors

-- O --

object.size Report the Space Allocated for an Object
objects List Objects
offset Include an Offset in a Model Formula
old.packages Download Packages from CRAN
oldClass Object Classes
on.exit Function Exit Code
open Functions to Manipulate Connections
Ops Group Generic Functions
Ops.difftime Time Intervals
Ops.factor Group Generic Functions
Ops.ordered Group Generic Functions
Ops.POSIXt Date-Time Classes
Ops.ts Time-Series Objects
optim General-purpose Optimization
optimise One Dimensional Optimization
optimize One Dimensional Optimization
options Options Settings
OrchardSprays Potency of Orchard Sprays
order Ordering Permutation
ordered Factors
outer Outer Product of Arrays

-- P --

p.adjust Adjust p-values for multiple comparisons
package.contents Package Contents and Description
package.dependencies Check Package Dependencies
package.description Package Contents and Description
package.skeleton Create a skeleton for a new package
packageStatus Package Management Tools
page Invoke a Pager on an R Object
pairlist Lists - Generic and Dotted Pairs
pairs Scatterplot Matrices
palette Set or View the Graphics Palette
panel.smooth Simple Panel Plot
par Set or Query Graphical Parameters
Paren Parentheses and Braces
parent.env Environment Access
parent.frame Functions to Access the Function Call Stack
parse Parse Expressions
paste Concatenate Strings
path.expand Expand File Paths
pbeta The Beta Distribution
pbinom The Binomial Distribution
pbirthday Probability of coincidences
pcauchy The Cauchy Distribution
pchisq The (non-central) Chi-Squared Distribution
pdf PDF Graphics Device
pentagamma Special Functions of Mathematics
persp Perspective Plots
pexp The Exponential Distribution
pf The F Distribution
pgamma The Gamma Distribution
pgeom The Geometric Distribution
phones The World's Telephones
phyper The Hypergeometric Distribution
pi Built-in Constants
pico Invoke a Text Editor
pictex A PicTeX Graphics Driver
pie Pie Charts
pipe Functions to Manipulate Connections
PlantGrowth Results from an Experiment on Plant Growth
plnorm The Log Normal Distribution
plogis The Logistic Distribution
plot Generic X-Y Plotting
plot.data.frame Plot Method for Data Frames
plot.default The Default Scatterplot Function
plot.density Plot Method for Kernel Density Estimation
plot.design Plot Univariate Effects of a `Design' or Model
plot.factor Plotting Factor Variables
plot.formula Formula Notation for Scatterplots
plot.function Draw Function Plots
plot.histogram Plot Histograms
plot.lm Plot Diagnostics for an lm Object
plot.mlm Plot Diagnostics for an lm Object
plot.new Create / Start a New Plot Frame
plot.POSIXct Date-time Plotting Functions
plot.POSIXlt Date-time Plotting Functions
plot.table Plot Methods for `table' Objects
plot.ts Plotting Time-Series Objects
plot.TukeyHSD Compute Tukey Honest Significant Differences
plot.window Set up World Coordinates for Graphics Window
plot.xy Basic Internal Plot Function
plotmath Mathematical Annotation in R
pmatch Partial String Matching
pmax Maxima and Minima
pmin Maxima and Minima
pnbinom The Negative Binomial Distribution
png JPEG and PNG graphics devices
pnorm The Normal Distribution
points Add Points to a Plot
points.formula Formula Notation for Scatterplots
Poisson The Poisson Distribution
poisson Family Objects for Models
poly Compute Orthogonal Polynomials
polygon Polygon Drawing
polym Compute Orthogonal Polynomials
polyroot Find Zeros of a Real or Complex Polynomial
pos.to.env Convert Positions in the Search Path to Environments
POSIXct Date-Time Classes
POSIXlt Date-Time Classes
POSIXt Date-Time Classes
postscript PostScript Graphics
power Create a Power Link Object
ppoints Ordinates for Probability Plotting
ppois The Poisson Distribution
precip Annual Precipitation in US Cities
predict Model Predictions
predict.glm Predict Method for GLM Fits
predict.lm Predict method for Linear Model Fits
predict.mlm Predict method for Linear Model Fits
predict.poly Compute Orthogonal Polynomials
preplot Pre-computations for a Plotting Objeect
presidents Quarterly Approval Ratings of US Presidents
pressure Vapor Pressure of Mercury as a Function of Temperature
pretty Pretty Breakpoints
prettyNum Encode in a Common Format
print Print Values
print.anova Anova Tables
print.aov Fit an Analysis of Variance Model
print.aovlist Fit an Analysis of Variance Model
print.AsIs Inhibit Interpretation/Conversion of Objects
print.atomic Deprecated Functions
print.by Apply a Function to a Data Frame split by Factors
print.coefmat Deprecated Functions
print.condition Condition Handling and Recovery
print.connection Functions to Manipulate Connections
print.data.frame Printing Data Frames
print.default Default Printing
print.density Kernel Density Estimation
print.difftime Time Intervals
print.dummy.coef Extract Coefficients in Original Coding
print.factor Print Values
print.family Family Objects for Models
print.formula Model Formulae
print.ftable Flat Contingency Tables
print.getAnywhere Retrieve an R Object, Including from a Namespace
print.glm Fitting Generalized Linear Models
print.hsearch Search the Help System
print.htest Print Values
print.infl Regression Deletion Diagnostics
print.integrate Integration of One-Dimensional Functions
print.libraryIQR Loading and Listing of Packages
print.listof Print Values
print.lm Fitting Linear Models
print.logLik Extract Log-Likelihood
print.matrix Default Printing
print.MethodsFunction List Methods for S3 Generic Functions or Classes
print.mtable Find Aliases (Dependencies) in a Model
print.noquote Class for ``no quote'' Printing of Character Strings
print.octmode Display Numbers in Octal
print.packageInfo Loading and Listing of Packages
print.packageIQR Data Sets
print.packageStatus Package Management Tools
print.POSIXct Date-Time Classes
print.POSIXlt Date-Time Classes
print.recordedplot Record and Replay Plots
print.restart Condition Handling and Recovery
print.rle Run Length Encoding
print.simple.list Print Values
print.socket Create a Socket Connection
print.summary.aov Summarize an Analysis of Variance Model
print.summary.aovlist Summarize an Analysis of Variance Model
print.summary.glm Summarizing Generalized Linear Model Fits
print.summary.lm Summarizing Linear Model Fits
print.summary.manova Summary Method for Multivariate Analysis of Variance
print.summary.table Cross Tabulation and Table Creation
print.table Print Values
print.tables.aov Compute Tables of Results from an Aov Model Fit
print.terms Model Terms
print.ts Printing Time-Series Objects
print.TukeyHSD Compute Tukey Honest Significant Differences
print.xtabs Cross Tabulation
printCoefmat Print Coefficient Matrices
prmatrix Print Matrices, Old-style
proc.time Running Time of R
prod Product of Vector Elements
profile Generic Function for Profiling Models
proj Projections of Models
prompt Produce Prototype of an R Documentation File
promptData Generate a Shell for Documentation of Data Sets
prop.table Express table entries as fraction of marginal table
ps.options PostScript Graphics
psignrank Distribution of the Wilcoxon Signed Rank Statistic
pt The Student t Distribution
ptukey The Studentized Range Distribution
punif The Uniform Distribution
pushBack Push Text Back on to a Connection
pushBackLength Push Text Back on to a Connection
pweibull The Weibull Distribution
pwilcox Distribution of the Wilcoxon Rank Sum Statistic

-- Q --

q Terminate an R Session
qbeta The Beta Distribution
qbinom The Binomial Distribution
qbirthday Probability of coincidences
qcauchy The Cauchy Distribution
qchisq The (non-central) Chi-Squared Distribution
qexp The Exponential Distribution
qf The F Distribution
qgamma The Gamma Distribution
qgeom The Geometric Distribution
qhyper The Hypergeometric Distribution
qlnorm The Log Normal Distribution
qlogis The Logistic Distribution
qnbinom The Negative Binomial Distribution
qnorm The Normal Distribution
qpois The Poisson Distribution
qqline Quantile-Quantile Plots
qqnorm Quantile-Quantile Plots
qqplot Quantile-Quantile Plots
qr The QR Decomposition of a Matrix
qr.Q Reconstruct the Q, R, or X Matrices from a QR Object
qr.qty The QR Decomposition of a Matrix
qr.qy The QR Decomposition of a Matrix
qr.R Reconstruct the Q, R, or X Matrices from a QR Object
qr.resid The QR Decomposition of a Matrix
qr.solve The QR Decomposition of a Matrix
qr.X Reconstruct the Q, R, or X Matrices from a QR Object
qsignrank Distribution of the Wilcoxon Signed Rank Statistic
qt The Student t Distribution
qtukey The Studentized Range Distribution
quakes Locations of Earthquakes off Fiji
quantile Sample Quantiles
quarters Extract Parts of a POSIXt Object
quartz MacOS X Quartz device
quasi Family Objects for Models
quasibinomial Family Objects for Models
quasipoisson Family Objects for Models
quit Terminate an R Session
qunif The Uniform Distribution
quote Substituting and Quoting Expressions
qweibull The Weibull Distribution
qwilcox Distribution of the Wilcoxon Rank Sum Statistic

-- R --

R.home Return the R Home Directory
R.Version Version Information
R.version Version Information
r2dtable Random 2-way Tables with Given Marginals
rainbow Color Palettes
Random.user User-supplied Random Number Generation
randu Random Numbers from Congruential Generator RANDU
range Range of Values
rank Sample Ranks
rbeta The Beta Distribution
rbind Combine R Objects by Rows or Columns
rbinom The Binomial Distribution
rcauchy The Cauchy Distribution
rchisq The (non-central) Chi-Squared Distribution
Rd2dvi Utilities for Processing Rd Files
Rd2txt Utilities for Processing Rd Files
Rdconv Utilities for Processing Rd Files
Re Complex Vectors
read.00Index Read 00Index-style Files
read.csv Data Input
read.csv2 Data Input
read.dcf Read and Write Data in DCF Format
read.delim Data Input
read.delim2 Data Input
read.ftable Manipulate Flat Contingency Tables
read.fwf Read Fixed Width Format Files
read.socket Read from or Write to a Socket
read.table Data Input
readBin Transfer Binary Data To and From Connections
readChar Transfer Binary Data To and From Connections
readline Read a Line from the Terminal
readLines Read Text Lines from a Connection
real Real Vectors
Recall Recursive Calling
recordPlot Record and Replay Plots
recover Browsing after an Error
rect Draw a Rectangle
reformulate Modify Terms Objects
reg.finalizer Finalization of objects
regex Regular Expressions as used in R
regexp Regular Expressions as used in R
regexpr Pattern Matching and Replacement
regular expression Regular Expressions as used in R
relevel Reorder Levels of Factor
REMOVE Remove Add-on Packages
remove Remove Objects from a Specified Environment
remove.packages Remove Installed Packages
removeCConverter Management of .C argument conversion list
removeTaskCallback Add or remove a top-level task callback
Renviron.site Initialization at Start of an R Session
rep Replicate Elements of Vectors and Lists
repeat Control Flow
replace Replace Values in a Vector
replayPlot Record and Replay Plots
replicate Apply a Function over a List or Vector
replications Number of Replications of Terms
require Loading and Listing of Packages
reshape Reshape Grouped Data
resid Extract Model Residuals
residuals Extract Model Residuals
residuals.glm Accessing Generalized Linear Model Fits
residuals.lm Accessing Linear Model Fits
restartDescription Condition Handling and Recovery
restartFormals Condition Handling and Recovery
return Function Definition
rev Reverse Elements
rexp The Exponential Distribution
rf The F Distribution
rgamma The Gamma Distribution
rgb RGB Color Specification
rgeom The Geometric Distribution
RHOME R Home Directory
rhyper The Hypergeometric Distribution
rivers Lengths of Major North American Rivers
rle Run Length Encoding
rlnorm The Log Normal Distribution
rlogis The Logistic Distribution
rm Remove Objects from a Specified Environment
rmultinom The Multinomial Distribution
rnbinom The Negative Binomial Distribution
RNG Random Number Generation
RNGkind Random Number Generation
RNGversion Random Number Generation
rnorm The Normal Distribution
round Rounding of Numbers
round.difftime Time Intervals
round.POSIXt Round / Truncate Data-Time Objects
row Row Indexes
row.names Get and Set Row Names for Data Frames
rowMeans Form Row and Column Sums and Means
rownames Row and Column Names
rowsum Give row sums of a matrix or data frame, based on a grouping variable
rowSums Form Row and Column Sums and Means
rpois The Poisson Distribution
Rprof Enable Profiling of R's Execution
Rprofile Initialization at Start of an R Session
rsignrank Distribution of the Wilcoxon Signed Rank Statistic
rstandard Regression Deletion Diagnostics
rstudent Regression Deletion Diagnostics
rt The Student t Distribution
rug Add a Rug to a Plot
runif The Uniform Distribution
rweibull The Weibull Distribution
rwilcox Distribution of the Wilcoxon Rank Sum Statistic
R_HOME R Home Directory
R_LIBS Loading and Listing of Packages

-- S --

S3Methods Class Methods
SafePrediction Utility Function for Safe Prediction
sample Random Samples and Permutations
sapply Apply a Function over a List or Vector
save Save R Objects
savehistory Load or Save or Display the Commands History
scale Scaling and Centering of Matrix-like Objects
scan Read Data Values
screen Creating and Controlling Multiple Screens on a Single Device
sd Standard Deviation
Sd2Rd Utilities for Processing Rd Files
se.contrast Standard Errors for Contrasts in Model Terms
search Give Search Path for R Objects
searchpaths Give Search Path for R Objects
seek Functions to Reposition Connections
segments Add Line Segments to a Plot
seq Sequence Generation
seq.POSIXt Generate Regular Sequences of Dates
sequence Create A Vector of Sequences
set.seed Random Number Generation
setCConverterStatus Management of .C argument conversion list
setdiff Set Operations
setequal Set Operations
setwd Get or Set Working Directory
SHLIB Build Shared Library for Dynamic Loading
showConnections Display Connections
sign Sign Function
signalCondition Condition Handling and Recovery
Signals Interrupting Execution of R
signif Rounding of Numbers
SignRank Distribution of the Wilcoxon Signed Rank Statistic
simpleCondition Condition Handling and Recovery
simpleError Condition Handling and Recovery
simpleWarning Condition Handling and Recovery
sin Trigonometric Functions
single Double Precision Vectors
sinh Hyperbolic Functions
sink Send R Output to a File
sleep Student's Sleep Data
slice.index Slice Indexes in an Array
socketConnection Functions to Manipulate Connections
socketSelect Wait on Socket Connections
solve Solve a System of Equations
solve.qr The QR Decomposition of a Matrix
sort Sorting or Ordering Vectors
sort.list Ordering Permutation
source Read R Code from a File or a Connection
Special Special Functions of Mathematics
spline Interpolating Splines
splinefun Interpolating Splines
split Divide into Groups
split.screen Creating and Controlling Multiple Screens on a Single Device
sprintf Use C-style String Formatting Commands
sqrt Miscellaneous Mathematical Functions
sQuote Quote Text
stack Stack or Unstack Vectors from a Data Frame or List
stack.loss Brownlee's Stack Loss Plant Data
stack.x Brownlee's Stack Loss Plant Data
stackloss Brownlee's Stack Loss Plant Data
stars Star (Spider/Radar) Plots and Segment Diagrams
start Encode the Terminal Times of Time Series
Startup Initialization at Start of an R Session
stat.anova GLM Anova Statistics
state US State Facts and Figures
stderr Display Connections
stdin Display Connections
stdout Display Connections
stem Stem-and-Leaf Plots
step Choose a model by AIC in a Stepwise Algorithm
stop Stop Function Execution
stopifnot Ensure the `Truth' of R Expressions
storage.mode The (Storage) Mode of an Object
str Compactly Display the Structure of an Arbitrary R Object
str.logLik Extract Log-Likelihood
str.POSIXt Date-Time Classes
strftime Date-time Conversion Functions to and from Character
strheight Plotting Dimensions of Character Strings and Math Expressions
stripchart 1-D Scatter Plots
strptime Date-time Conversion Functions to and from Character
strsplit Split the Elements of a Character Vector
structure Attribute Specification
strwidth Plotting Dimensions of Character Strings and Math Expressions
strwrap Wrap Character Strings to Format Paragraphs
sub Pattern Matching and Replacement
Subscript Extract or Replace Parts of an Object
subset Subsetting Vectors and Data Frames
substitute Substituting and Quoting Expressions
substr Substrings of a Character Vector
substring Substrings of a Character Vector
sum Sum of Vector Elements
Summary Group Generic Functions
summary Object Summaries
summary.aov Summarize an Analysis of Variance Model
summary.aovlist Summarize an Analysis of Variance Model
summary.connection Functions to Manipulate Connections
Summary.data.frame Group Generic Functions
summary.data.frame Object Summaries
summary.default Object Summaries
Summary.difftime Time Intervals
Summary.factor Group Generic Functions
summary.factor Object Summaries
summary.glm Summarizing Generalized Linear Model Fits
summary.infl Regression Deletion Diagnostics
summary.lm Summarizing Linear Model Fits
summary.manova Summary Method for Multivariate Analysis of Variance
summary.matrix Object Summaries
summary.mlm Summarizing Linear Model Fits
summary.packageStatus Package Management Tools
Summary.POSIXct Date-Time Classes
summary.POSIXct Date-Time Classes
Summary.POSIXlt Date-Time Classes
summary.POSIXlt Date-Time Classes
summary.table Cross Tabulation and Table Creation
summaryRprof Summarise Output of R Profiler
sunflowerplot Produce a Sunflower Scatter Plot
sunspots Monthly Sunspot Numbers, 1749-1983
suppressWarnings Warning Messages
svd Singular Value Decomposition of a Matrix
sweep Sweep out Array Summaries
swiss Swiss Fertility and Socioeconomic Indicators (1888) Data
switch Select One of a List of Alternatives
symbol.C Foreign Function Interface
symbol.For Foreign Function Interface
symbols Draw symbols on a plot
symnum Symbolic Number Coding
Syntax Operator Syntax
sys.call Functions to Access the Function Call Stack
sys.calls Functions to Access the Function Call Stack
sys.frame Functions to Access the Function Call Stack
sys.frames Functions to Access the Function Call Stack
sys.function Functions to Access the Function Call Stack
Sys.getenv Get Environment Variables
Sys.getlocale Query or Set Aspects of the Locale
Sys.getpid Get the Process ID of the R Session
Sys.info Extract System and User Information
sys.load.image Save R Objects
Sys.localeconv Find Details of the Numerical Representations in the Current Locale
sys.nframe Functions to Access the Function Call Stack
sys.on.exit Functions to Access the Function Call Stack
sys.parent Functions to Access the Function Call Stack
sys.parents Functions to Access the Function Call Stack
Sys.putenv Set Environment Variables
sys.save.image Save R Objects
Sys.setlocale Query or Set Aspects of the Locale
Sys.sleep Suspend Execution for a Time Interval
sys.source Parse and Evaluate Expressions from a File
sys.status Functions to Access the Function Call Stack
Sys.time Get Current Time and Timezone
Sys.timezone Get Current Time and Timezone
system Invoke a System Command
system.file Find Names of R System Files
system.time CPU Time Used

-- T --

T Logical Vectors
t Matrix Transpose
table Cross Tabulation and Table Creation
tabulate Tabulation for Vectors
tan Trigonometric Functions
tanh Hyperbolic Functions
tapply Apply a Function Over a ``Ragged'' Array
taskCallbackManager Create an R-level task callback manager
TDist The Student t Distribution
tempdir Create Names for Temporary Files
tempfile Create Names for Temporary Files
termplot Plot regression terms
terms Model Terms
terms.formula Construct a terms Object from a Formula
terms.object Description of Terms Objects
terms.terms Model Terms
terrain.colors Color Palettes
tetragamma Special Functions of Mathematics
text Add Text to a Plot
textConnection Text Connections
time Sampling Times of Time Series
Titanic Survival of passengers on the Titanic
title Plot Annotation
tkfilefind Deprecated Functions
tolower Character Translation and Casefolding
ToothGrowth The Effect of Vitamin C on Tooth Growth in Guinea Pigs
topenv Top Level Environment
topicName Documentation
topo.colors Color Palettes
toString toString Converts its Argument to a Character String
toupper Character Translation and Casefolding
trace Interactive Tracing and Debugging of Calls to a Function or Method
traceback Print Call Stack of Last Error
tracingState Interactive Tracing and Debugging of Calls to a Function or Method
transform Transform an Object, for Example a Data Frame
trees Girth, Height and Volume for Black Cherry Trees
Trig Trigonometric Functions
trigamma Special Functions of Mathematics
TRUE Logical Vectors
trunc Rounding of Numbers
trunc.POSIXt Round / Truncate Data-Time Objects
truncate Functions to Reposition Connections
try Try an Expression Allowing Error Recovery
tryCatch Condition Handling and Recovery
ts Time-Series Objects
tsp Tsp Attribute of Time-Series-like Objects
Tukey The Studentized Range Distribution
TukeyHSD Compute Tukey Honest Significant Differences
type.convert Type Conversion on Character Variables
typeof The Type of an Object

-- U --

UCBAdmissions Student Admissions at UC Berkeley
unclass Object Classes
undebug Debug a function
Uniform The Uniform Distribution
union Set Operations
unique Extract Unique Elements
uniroot One Dimensional Root (Zero) Finding
unix Invoke a System Command
unix.time CPU Time Used
unlink Delete Files and Directories
unlist Flatten Lists
unname Remove `names' or `dimnames'
unsplit Divide into Groups
unstack Stack or Unstack Vectors from a Data Frame or List
untrace Interactive Tracing and Debugging of Calls to a Function or Method
unz Functions to Manipulate Connections
update Update and Re-fit a Model Call
update.formula Model Updating
update.packages Download Packages from CRAN
update.packageStatus Package Management Tools
upgrade Package Management Tools
upper.tri Lower and Upper Triangular Part of a Matrix
url Functions to Manipulate Connections
url.show Display a text URL
USArrests Violent Crime Rates by US State
UseMethod Class Methods
USJudgeRatings Lawyers' Ratings of State Judges in the US Superior Court
USPersonalExpenditure Personal Expenditure Data
uspop Populations Recorded by the US Census

-- V --

VADeaths Death Rates in Virginia (1940)
var Correlation, Variance and Covariance (Matrices)
variable.names Case and Variable Names of Fitted Models
vcov Calculate Variance-Covariance Matrix for a Fitted Model Object
vector Vectors
version Version Information
vi Invoke a Text Editor
vignette View or List Vignettes
volcano Topographic Information on Auckland's Maunga Whau Volcano

-- W --

warning Warning Messages
warnings Print Warning Messages
warpbreaks The Number of Breaks in Yarn during Weaving
weekdays Extract Parts of a POSIXt Object
Weibull The Weibull Distribution
weighted.mean Weighted Arithmetic Mean
weighted.residuals Compute Weighted Residuals
weights Accessing Linear Model Fits
weights.glm Fitting Generalized Linear Models
which Which indices are TRUE?
which.max Where is the Min() or Max() ?
which.min Where is the Min() or Max() ?
while Control Flow
Wilcoxon Distribution of the Wilcoxon Rank Sum Statistic
WinAnsi Functions to Manipulate Connections
window Time Windows
with Evaluate an Expression in a Data Environment
withCallingHandlers Condition Handling and Recovery
withRestarts Condition Handling and Recovery
women Average Heights and Weights for American Women
write Write Data to a File
write.dcf Read and Write Data in DCF Format
write.ftable Manipulate Flat Contingency Tables
write.socket Read from or Write to a Socket
write.table Data Output
writeBin Transfer Binary Data To and From Connections
writeChar Transfer Binary Data To and From Connections
writeLines Write Lines to a Connection
wsbrowser Browse Objects in Environment

-- X --

X11 X Window System Graphics
x11 X Window System Graphics
xedit Invoke a Text Editor
xemacs Invoke a Text Editor
xfig XFig Graphics Device
xinch Graphical Units
xor Logical Operators
xtabs Cross Tabulation
xy.coords Extracting Plotting Structures
xyinch Graphical Units
xyz.coords Extracting Plotting Structures

-- Y --

yinch Graphical Units

-- Z --

zapsmall Rounding of Numbers
zip.file.extract Extract File from a Zip Archive

-- misc --

[ Extract or Replace Parts of an Object
[.AsIs Inhibit Interpretation/Conversion of Objects
[.data.frame Extract or Replace Parts of a Data Frame
[.difftime Time Intervals
[.factor Extract or Replace Parts of a Factor
[.formula Extract or Replace Parts of an Object
[.getAnywhere Retrieve an R Object, Including from a Namespace
[.noquote Class for ``no quote'' Printing of Character Strings
[.POSIXct Date-Time Classes
[.POSIXlt Date-Time Classes
[.terms Modify Terms Objects
[.ts Extract or Replace Parts of an Object
[[ Extract or Replace Parts of an Object
[[.data.frame Extract or Replace Parts of a Data Frame
[[.POSIXct Date-Time Classes
^ Arithmetic Operators
{ Parentheses and Braces
| Logical Operators
|| Logical Operators
~ Model Formulae