baptiste / r-lessons

Setup

• Download and install R from https://cran.rstudio.com/
• Download Rstudio Desktop from https://posit.co/download/rstudio-desktop/

First steps

1. Start Rstudio

2. Try to plot something:

plot(1:10, rnorm(10), xlab="x", ylab="random values")

3. Install some packages

install.packages('tidyverse')

Resources

• Hands-on programming with R
• R for data science
• R for data science (2nd edition, in progress)

Datasets

Browse through https://github.com/rfordatascience/tidytuesday#datasets

Example:

https://www.kaggle.com/code/willcanniford/chocolate-bar-ratings-extensive-eda/report https://www.kaggle.com/datasets/rtatman/chocolate-bar-ratings

Basic steps

1 + 1

x = c(1.2, 5.0, 3.4, 4.8)
y = x^2
print(y)

plot(x, y)

for (i in 1:10) {
  print(paste("file", i, ".png", sep=""))
}

d = read.csv('data.csv')