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R Reference Card

R Reference Card by Tom Short EPRI PEAC



An Introduction to R

14.4 Compression and Archives . CRAN family of Internet sites (via https://CRAN.R-project.org) and elsewhere. More details on packages are given later ...



metafor: Meta-Analysis Package for R

?? ???? ???? ?? Network meta- ... package website: https://www.metafor-project.org ... See also Morris and DeShon (2002) for a thorough discussion of the ...



psych: Procedures for Psychological Psychometric

https://cran.r-project.org/web/packages/psych/psych.pdf



Creating R Packages Using CRAN

And Local R Archive



rpart.pdf

https://cran.r-project.org/package=rpart. BugReports https://github.com/bethatkinson/rpart/issues. Date/Publication 2022-01-24 20:12:45 UTC.



The R `sampling package - Alina Matei and Yves Tillé University of

The R language. History of the package. The R language. ? Shareware available on http://cran.r-project.org/. ? The Comprehensive R Archive Network.



R for Beginners

distributed from the internet site of the Comprehensive R Archive Network. (CRAN)5 where the instructions 3http://cran.r-project.org/doc/FAQ/R-FAQ.html.



Brief Users Guide: Dynamic Systems Estimation (DSE)

The software documented here is available on the the Comprehensive R. Archive Network (CRAN) <http://cran.r-project.org>. Please check for new versions.



randomForest: Breiman and Cutlers Random Forests for

URL https://www.stat.berkeley.edu/~breiman/RandomForests/. NeedsCompilation yes. Repository CRAN. Date/Publication 2022-05-23 08:27:49 UTC. R topics 

RforBeginners

EmmanuelParadis

InstitutdesSciencesdel'Evolution

UniversiteMontpellierII

F-34095Montpelliercedex05

France

E-mail:paradis@isem.univ-montp2.fr

c copyrightnoticeisincluded.

Contents

1Preamble1

2Afewconceptsbeforestarting3

3DatawithR9

4GraphicswithR36

5StatisticalanalyseswithR55

6ProgrammingwithRinpratice64

7LiteratureonR71

1Preamble

details,sometimeswithtables. andRobertGentleman

2.Thereareimportant

3,acopy

ofwhichisalsodistributedwithR. 4; astheRDevelopmentCoreTeam. (CRAN) analyses. 2See 3

4Formoreinformation:http://www.gnu.org/

5http://cran.r-project.org/

1 ableontheinternet exibility.Whereas exibility

6Forexample:http://stat.cmu.edu/S/

2

2Afewconceptsbeforestarting

Weshallseerstbrie

yhowRworks.Then,Iwilldescribethe\assign"

2.1HowRworks

so.

25).AnR

functionmaybesketchedasfollows: arguments! options! function defaultarguments =)result 3

67).The

thecomputer:notemporarylesareused(Fig.

1).Thereadingsandwritings

fromaremoteserverthroughinternet. functionsandoperators \data"objects ?6)XXXXXXXz \results"objects.../library/base/ /stast/ /graphics/ ...libraryof functions data les internet

PSJPEG...keyboard

mouse -commands screen

ActivememoryHarddisk

Figure1:AschematicviewofhowRworks.

thediskinadirectorycalledR

HOME/library(RHOMEisthedirectory

leR package. >n [1]10 4 ).Rdiscriminates orthereverse: >n<-15 >n [1]15 >5->n >n [1]5 >x<-1 >X<-10 >x [1]1 >X [1]10 >n<-10+2 >n [1]12 >n<-3+rnorm(1) >n [1]2.208807 andvarianceunity(p.

17).Notethatyoucansimplytypeanexpression

screenbutisnotstoredinmemory: >(10+2)*5 [1]60 5 derstanding. objectsaredisplayed. >name<-"Carmen";n1<-10;n2<-100;m<-0.5 >ls() [1]"m""n1""n2""name" used: >ls(pat="m") [1]"m""name" >ls(pat="^m") [1]"m" >ls.str() m:num0.5 n1:num10 n2:num100 name:chr"Carmen" detailswiththeoptionmax.level=-1: >M<-data.frame(n1,n2,m) >ls.str(pat="M")

M:`data.frame':1obs.of3variables:

$n1:num10 $n2:num100 $m:num0.5 >ls.str(pat="M",max.level=-1)

M:`data.frame':1obs.of3variables:

6

2.3Theon-linehelp

>?lm

Error:syntaxerror

>help("*")

Arithmeticpackage:baseRDocumentation

ArithmeticOperators

bysectionswhichgivedetailedinformation.

Description:briefdescription.

thetypicaluse.

Details:detaileddescription.

ator. thehelpwiththefunctionexample. 7 >help("bs") youcouldtry'help.search("bs")' >help("bs",try.all.packages=TRUE) canbefoundinthefollowingpackages:

PackageLibrary

splines/usr/lib/R/library theoptionpackage: >help("bs",package="splines") bspackage:splinesRDocumentation

B-SplineBasisforPolynomialSplines

Description:

>help.start() =TRUE)). >apropos(help) [1]"help"".helpForCall""help.search" [4]"help.start" 8

3DatawithR

3.1Objects

dependsontheattributesofthelatter. numeric,character,complex >x<-1 >mode(x) [1]"numeric" >length(x) [1]1 >A<-"Gomphotherium";compar<-TRUE;z<-1i >mode(A);mode(compar);mode(z) [1]"character" [1]"logical" [1]"complex" >N<-2.1e23 >N [1]2.1e+23 9 >x<-5/0 >x [1]Inf >exp(x) [1]Inf >exp(-x) [1]0 >x-x [1]NaN 14, theoptionqmethodofthisfunction). >x [1]"Doublequotes\"delimitateR'sstrings." >cat(x)

Doublequotes"delimitateR'sstrings.

slashes(butsinglequotesmustbe!): >x [1]"Doublequotes\"delimitateR'sstrings." data. objectmodesseveralmodes possibleinthe sameobject? factornumericorcharacterNo tsnumeric,character,complexorlogicalNo function,expression,... 10 object,includedlists!

3.2Readingdatainale

quotesdbs_dbs21.pdfusesText_27
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