R, RStudio & GitHub

Dr. Ajay Kumar Koli \(\cdot\) 2nd SARA Bootcamp

R Language

Download R Programming Language

“R is a free software environment for statistical computing and graphics.”

Data Science Project Flowchart

Practice in R Console

1. Addition

2. Subtraction

3. Sequence

Structure of R Function

Practice R Console

1. Combine elements

2. Create an object

RStudio IDE

“The RStudio integrated development environment (IDE) is a set of tools built to help you be more productive with R and Python.”

Practice in RStudio

1. An overview of RStudio IDE.

2. Create project in RStudio.

R
Packages

R Packages

Package is “a collection of functions, data and documentation that extends the capabilties of base R.”

Install R Packages

• Using Console

# function to install R package
install.packages("tidyverse")

library(tidyverse) #fun to call r package

• Using RStudio Windows

GitHub

GitHub

“platform that allows developers to create, store, manage, and share their code.”

“It uses Git to provide distributed version control”

Install Git

Webpage: https://gitforwindows.org/

Install Git

Open Terminal git --version

GitHub Users

GitHub Sign up

• Username advice
  • all small cases
  • use hyphen - to separate the words
  • the shorter the better
  • make it timeless (do not ajay-jnu, ajay-ny, ajay-microsoft)
  • avoid special characters
  • reuse from your social media
  • comfortable to reveal to the world

GitHub Settings

Enable Two Factor Authentication

Enable Two Factor Authentication

RStudio \(\rightarrow\) Tools \(\rightarrow\) Global Options \(\rightarrow\) Git/SVN

In RStudio save GitHub Details

• Using Console, Install R package usethis

## install if needed (do this exactly once):
## install.packages("usethis")

library(usethis)
use_git_config(user.name = "ajay-kolii",
               user.email = "mynameajay@gmail.com")

See/Edit saved GitHub information

• Run in console edit_git_config() from usethis package. OR

• Run in Terminal
  git config --global --list

GitHub’s Personal Access Token (PAT)

It is a way to authenticate and interact with GitHub’s API and repositories without using your username and password.

Create GitHub’s PAT in Console

library(gitcreds)
create_github_token()

Personal Access Token (PAT)

Personal Access Token (PAT)

Add PAT

gitcreds_set()

View GitHub Credentials

gitcreds_get()

• To See Saved Credentials, Run in Terminal
  git config --global --list

First .qmd File

1. Create the file

2. Save the file

3. Render the file

🤯 Your Turn

Write a brief note describing your experience of using R and RStudio for the first time.