Getting Help in R

Joshua Wiley, M.A.

Senior Analyst — Elkhart Group

In R: basic

This assumes that you already have R installed.

In R: args

Know the functions but not the arguments? Use tab completion or args


> args(lm)
function (formula, data, subset, weights, 
    na.action, method = "qr", model = TRUE, 
    x = FALSE, y = FALSE, qr = TRUE, 
    singular.ok = TRUE, contrasts = NULL, 
    offset, ...) 
NULL

In R: sos

The sos package offers additional searching options to find functions with a specific title or purpose. This is done using either findFn or ???


# if you do not have, uncomment and install
# install.packages("sos")
require(sos)
findFn("lm", maxPages = 2)
# equivalenty
???lm(2)

In R: sos

Which opens a web browser like this

In R: example

example — run the examples for a function


> example(mean)
mean> x <- c(0:10, 50)

mean> xm <- mean(x)

mean> c(xm, mean(x, trim = 0.10))
[1] 8.75 5.50	
	  

example(mean, local=TRUE) to not affect your current workspace

In R: demo

demo — to see demonstrations available in a particular package


> demo(package = "stats")
Demos in package 'stats':

glm.vr         Some glm() examples from V&R
               with several predictors
lm.glm         Some linear and generalized
               linear modelling examples
               from `An Introduction to
               Statistical Modelling' by
               Annette Dobson
nlm            Nonlinear least-squares using
               nlm()
smooth         `Visualize' steps in Tukey's
               smoothers
	  

In R: demo

To run a particular demo, use the name and package


> demo("lm.glm", package = "stats")


	demo(lm.glm)
	---- ~~~~~~

Type  <Return>	 to start : 

In R: vignette

vignette — package vignettes are more detailed introductions


> vignette(package = "MCMCglmm")
Vignettes in package 'MCMCglmm':

CourseNotes    MCMCglmm CourseNotes (source,
               pdf)
Overview       MCMCglmm Overview (source,
               pdf)
	  

Open the course notes as a PDF
vignette("CourseNotes", package="MCMCglmm")

Online: finding the tools

Online: introductions

Online: questions and answers

Info

/

#
yves saint laurent femme replica Christian louboutin fake sale official best heels sandals Belt wallet fake prada outlet store Online best bags crossbody prada outlet cheap fake yves saint laurent crossbody wallet yves saint laurent Clutch sale authentic louis vuitton Best authentic replica shop handbags trio celine Canada Goose Outlet Parka authentic prada cheap handbags Bags handbags 2015 chloe outlet store Official 2015 handbags wallet celine store outlet chloe handbags discount Women bags replica sale yves saint laurent 2015 yves saint laurent italia replica Best online chloe handbags wallet outlet fake 100 authentic louis vuitton handbags Celine handbags luggage tote replica fake authentic official chloe replica Heels shoes christian louboutin online real outlet store Official website heels shoes sale replica christian louboutin Bags mini luggage celine 2015 replica store canada goose outletcanada goose outlet saleceline boston bagcanada goose uk
Replica store 2015 bags wallet celine Best wholesale replica cheap christian louboutin heels boots bags louis vuitton outlet cheap authentic prada saffiano outlet Pac cher replica cheap bags clutch yves saint laurent 2015 celine bags phantom outlet online Handbags clutch best official store outlet celine yves saint laurent store replica celine clasp shop designer prada sunglasses Fake shop authentic best luggage handbags louis vuitton Best online chloe handbags wallet outlet fake online celine women Bags crossbody replica sale online 2015 prada yves saint laurent salg fake yves saint laurent homme cheap Cheap outlet sale wallet bags prada Chaussures Louboutin Pas Cher Replica online bags trapeze celine real Handbags price replica online fake celine yves saint laurent Clutch outlet affordable louis vuitton handbags canada goose salecheap canada goose outletceline outletcheap canada goose
hermes belt outlet celine bag outlet celine luggage tote replica prada shoes prada wallet cheap prada wallet outlet chloe handbags for cheap hermes kelly outlet celine luggage sale red bottoms men red bottoms boots hermes kelly sale celine phantom bag sale hermes handbags outlet christian louboutin men hermes replica handbags hermes replica handbags celine phantom replica hermes outlet kelly bag hermes outlet birkin hermes sale bag celine handbags outlet
red bottoms boots prada sunglasses cheap prada shoes on sale celine outlet hermes kelly replica christian louboutin wedding shoes prada sunglasses outlet hermes kelly handbags replica hermes outlet birkin chloe handbags outlet prada purse prada sunglasses cheap christian louboutin wedding shoes hermes kelly sale yves saint laurent crossbody wallet