Introduction to R and RStudio

# Introduction to R and RStudio
### <br><br>Thiyanga S. Talagala, University of Sri Jayewardenepura
### IASSL: - Feb 21/25, 2022 <br> Slides: <a href="https://r4fun.netlify.app/">https://r4fun.netlify.app/</a>

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## R Programming Language

- R is a software environment for statistical computing and graphics.

- Language designers: **R**oss Ihaka and **R**obert Gentleman at the University of Auckland, New Zealand.

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### Minitab - Menu driven software

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### R - Scripting language

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### Menu driven software

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## Pros

- Do not have to remember the commands.

- User friendly.

## Cons

- Irritating if there are too many levels of menues to move around.

- Difficult to reproduce results.

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### Scripting language

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## Pros

- Useful for collaborative research.

- Ideal for reproducible research

## Cons

- The learning curve may be difficult at the start.

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## Why learn R?

- **Free and open-source** software package

- A large online community that makes it fun to learn

- Latest cutting edge technology

- Easier to update analysis

- Easier to reproduce analysis

- Easier to collaborate with others

- Easier to automate analysis
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# Your Turn
**Open RStudio by clicking on the RStudio icon**

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# The RStudio Panes

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# How to customize your RStudio theme?

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## Tools > Global Options > Appearance

![](rspanes/toold.png)

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# R and RStudio

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![](airport.jpg)
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> If R were **an airplane**, RStudio would be **the airport**, providing many, many supporting services that make it easier for you, the pilot, to take off and go to awesome places. Sure, you can fly an airplane without an airport, but having those runways and supporting infrastructure is a game-changer."

> Julie Lowndes

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# Create a new project

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# Installing R packages

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## R Packages

![](tidylogos-1.png)

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## Method 1

```r
install.packages("tidyverse", dependencies = TRUE)

```

## Method 2

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# Recap

✅ R and RStudio

✅ RStudio panes

- Console
    - Source
    - Environment/ History
    - File/ Plots/ Packages/ Help
    
✅ R packages installation