magrittr - Piping

Last updated on 2023-02-23 | Edit this page

Overview

Questions

How do you use pipes in R with magrittr`?

Objectives

Introduction

Magrittr Logo

Look at magrittr

Challenge 1: Can you do it?

What is the equivalent of using pipes

R

f(x)

Output

R

x %>% f

Challenge 2: Can you do it?

Can you rewrite the following with pipes to make it easier to read?

R

carData <-
 transform(
 aggregate(
 . ~ cyl,
 data = subset(mtcars, hp > 100),
 FUN = function(x) round(mean(x), 2)
 ),
 kpl = mpg*0.4251
 )

Output

R

carData <-
mtcars %>%
subset(hp > 100) %>%
aggregate(
. ~ cyl,
data = .,
FUN = . %>% mean %>% round(2)
) %>%
transform(kpl = mpg %>% multiply_by(0.4251))

Plotting

TODO: move to new epsiode, add epsidoe to config.yaml

Challenge

Can you display an image

Show me the solution

Key Points

magrittr is cool