R Programming Fundamental - Day 2 Help command

Help 

Today, I am learning Help() and Vignette() commands.

help(command)
?command

help(rnorm)

?rnorm

help.search("rnorm")

??rnorm

To see all available demo packages

demo(package = .packages(all.available = TRUE))

Demo in package 'graphics'

demo(package ='graphics')

demo(graphics)

Vignette

Getting package information in pdf format without internet

vignette()
vignette(package=.packages(all.available = TRUE))
vignette('parallel')
vignette('parallel', package='parallel')

Web Search

http://search.r-project.org

RSiteSearch("arithmetic mean")

To install a package

install.packages("sos")

To load that to library

library(sos)

Find function in R site

findFn("{arithmetic mean}")
findFn("{arithmetic mean}",maxPages=2)

Thank you for learning R with me.