script.md

R tidyverse workshop

Carpentry@UiO 2018-02-15

Read more about this type of document in Chapter 20 of “Happy Git with R”

Uncomment the following lines to install necessary packages

#install.packages("tidyverse")
#install.packages("maps")
#install.packages("gapminder")

First we need to load libraries installed previously

library(tidyverse)

## -- Attaching packages ----------- tidyverse 1.2.1 --

## v ggplot2 2.2.1     v purrr   0.2.4
## v tibble  1.4.2     v dplyr   0.7.4
## v tidyr   0.8.0     v stringr 1.2.0
## v readr   1.1.1     v forcats 0.2.0

## -- Conflicts -------------- tidyverse_conflicts() --
## x dplyr::filter() masks stats::filter()
## x dplyr::lag()    masks stats::lag()

We will source gapminder dataset into the session and assign it to the variable with the same name

gapminder <- gapminder::gapminder

Let’s make our first plot

ggplot(gapminder)+
  geom_point(mapping = aes(x=gdpPercap, y=lifeExp))

Generally speaking ggplot2 syntax follows the template:

# ggplot(<DATA>) +
#   geom_<GEOM_FUNCTION>(mapping=aes(<AESTETICS>))

Let’s learn some more about ggplot2 and its functions!