L1: R Studio

Bogdan G. Popescu

John Cabot University

What You’ll Learn Today

How to install R and RStudio
What Quarto is and how to use .qmd files
Basic R syntax and using R as a calculator
Understanding objects: numeric, character, and logical
Working with vectors, matrices, and data frames
Detecting missing values and using key functions like mean(), paste(), and sort()
How to write and structure clean, reproducible code in R

By the end, you’ll be able to write simple R scripts and explore your own data.

We will install two programs

Install the version of RStudio relevant for your OS.

Note that there are different files for Apple silicon (M1/M2) Macs and for Intel Macs

Install the version of RStudio relevant for your OS.

Note that there are different files for Apple silicon (M1/M2) Macs and for Intel Macs.

The platform interface for R studio looks like below:

The platform interface for R studio looks like below:

The platform interface for R studio looks like below:

The platform interface for R studio looks like below:

Quarto is a version of R Markdown from RStudio that allows us to run code and write text.

Quarto files have the *.qmd extension

You can produce a wide variety of output types:

You can now start typing.

To use Quarto with R, you should install the rmarkdown R package:

install.packages("rmarkdown")

You can now start typing.

To use Quarto with R, you should install the rmarkdown R package:

You can now start typing.

To use Quarto with R, you should install the rmarkdown R package:

You can now start typing.

To use Quarto with R, you should install the rmarkdown R package:

Let us now use R to understand how it works.

Let’s create a new quarto document and save it in your “week2” folder