Mutate using R "%>% could not be found"

Question

I am running Rstudio on my macbook Pro for a coursera course "learning to program with R"

I cant seem to figure out why the "mutate" function isnt working.

I am using the following code.

{r calc-total-bapt-vars-save}
arbuthnot <- arbuthnot %>%
  mutate(total = boys + girls)

I keep getting an error that "%>% could not be found. Am I missing something?

You need to include R library `magrittr` if you want to use the pipe operator. So just include `library(magrittr)`. — Maurits Evers, Oct 11 '17 at 01:20

score 1 · Accepted Answer · answered Oct 11 '17 at 01:27

1

Try:

install.packages("magrittr") 
install.packages("dplyr")

library("dplyr") 
library("magrittr")

mutate belongs to the dplyr library, while %>% (pipe) belongs to magrittr.

answered Oct 11 '17 at 01:27

P Ackerman

Part of the packages they asked us to install were the "dplyr" – Joseph Yeagle Oct 11 '17 at 01:30
But are you using it in your session? – P Ackerman Oct 11 '17 at 01:30
Whenever I need to use a package do I have to use the "library" function to do so? – Joseph Yeagle Oct 11 '17 at 01:30
Only the first time you need to use it in your session. – P Ackerman Oct 11 '17 at 01:31
If you're editing in the console, you only need to do it at the beginning of your session, but if you want to save a persistent script, you might want to put it at the top of your file. – P Ackerman Oct 11 '17 at 01:32
got it. **insert thumbs up*** I understand. Is there a place to find what packages include what commands? – Joseph Yeagle Oct 11 '17 at 01:37
`https://www.rdocumentation.org/`, you can probably search by command/function and or package – P Ackerman Oct 11 '17 at 01:39
Thanks Man. yea I use this for things as well. – Joseph Yeagle Oct 11 '17 at 01:46
4

FWIW the pipe, `%>%` is imported by `dplyr`. Loading `dplyr` will provide access to the pipe as well as `mutate` – Jake Kaupp Oct 11 '17 at 01:56

score 0 · Answer 2 · answered Oct 11 '17 at 01:23

0

Try this

install.packages("magrittr")

require(magrittr)

The pipe operator %>% is a magrittr functionality

answered Oct 11 '17 at 01:23

Gompu

Thanks when I added this then it gave me an error about not being able to find "mutate" – Joseph Yeagle Oct 11 '17 at 01:26
You will have to call the package dplyr too `install.packages("dplyr")` `library(dplyr)` – Gompu Oct 11 '17 at 01:53

2 Answers2