Get started with R

R is a language and environment for data analysis, and available as free software under the terms of the Free Software Foundation's GNU General Public License. You can download a software package and immediately install it from

CRAN R project

R is a programming language, and runs a “command” in an interactive manner, known as “interpretor.” Each command is requested in a form of “function”: For example, it is the function q() to quit the program.

> q()

Use it as a calculator. We can execute arithmetic operations at the prompt. For example, $8^4 \times 12^3$ can be performed by typing

> 8^4 * 12^3

R Studio. On top of R you need to install

R Studio

At the web site above you should follow their instruction, download and install [DESKTOP R STUDIO] at your PC. It provides an integrated development environment (IDE) for R.

idemo. This allows you to run R code interactively line by line. You can download

idemo.R,

and source it by executing

> source(file.choose())

and choosing the file idemo.R from folders. You can now start it by typing

> idemo()

and select R code of your choice from folders.