List of DataSet

> data(iris)
> head(iris)
  Sepal.Length Sepal.Width Petal.Length Petal.Width Species
1          5.1         3.5          1.4         0.2  setosa
2          4.9         3.0          1.4         0.2  setosa
3          4.7         3.2          1.3         0.2  setosa
4          4.6         3.1          1.5         0.2  setosa
5          5.0         3.6          1.4         0.2  setosa
6          5.4         3.9          1.7         0.4  setosa
> levels(iris$Species)
[1] "setosa"     "versicolor" "virginica" 

> install.packages("ggplot2")

R: statistics, bio-statistics, social sciences
Matlab: engineering, applied math
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Running R – interactively

source("foo.R")
R CMD BATCH foo.R
Rscript foo.R

R Help documentation
>help {utils}
R Documentation
Documentation
Description
help is the primary interface to the help systems.
Usage
help(topic, package = NULL, lib.loc = NULL,
verbose = getOption(“verbose”),
try.all.packages = getOption(“help.try.all.packages”),
help_type = getOption(“help_type”))….