"could not find function %>%<-", Was working fine then it stop working

[barobbie]

Has this happened to anyone, I was recently using it just fine. The pipe function was working just fine. Then all of a sudden R starts to slow down and it stops working completely. Provides me with a could not find function "%>%" Error which does not make sense since I was just using it. I have closed R reloaded packages and still nothing.

Packages and Libraries are of the following:

`install.packages("tidyverse")

install.packages("magrittr")

library("dplyr")

library("readr") library("lubridate")

library("tidyr")

library("stringr")

library("tidyverse")

Code chunk:

heartrate_sec<-data.frame(
 Id =c(336,339,342),
 Time=c(4/12/2016 7:21:00 AM, 4/12/2016 7:21:05 AM,4/12/2016 
  7:21:10 AM) 

new_heartrate <- heartrate_sec %>%  separate(Time 
,c("date","time"),sep=" ", extra="merge")

The way I understood this was this will allow me to separate the column "Time" into

date =c(4/12/2016,4/12/2016,4/12/2016)
time =c(7:21:00 AM, 7:21:05 AM, 7:21:10 AM) 

Where extra="merge" will merge the AM or anything else that is not time and date

But unfortunately, that didn't work so I received the following error

Error in heartrate_sec %>% separate(Time, c("date", "time"), sep = " ", : could not find function "%>%"

When I tried it in both cloud R and in a new project based on my desktop version of R and proceeded to run the entire code chunk again but with a time format.

heartrate_sec %>% separate(Time,c("Date","Time"),sep=" ",extra 
= "merge") %>% mutate(out = format(Time, format="%H:%M:%S"))

I received the same thing now with an R Session Aborted R encountered a fatal error. The session was terminated.

I do want to point out that I have tried this code chunk previously and it worked just fine before but now I am a bit clueless as to what is wrong I hope I have explained it correctly. I am fairly new to R so please bear with me.

[barobbie]

Hi! Thanks for the welcome!

Yes, that was one of the 3 problems that I was facing. I needed to call
library(magrittr)

The function did in fact work in a previous R environment with a much smaller data. frame . This brought me to realize
that
data.frame heartrate_sec
contains 2483658 objects of 3 variables.
I believe it was too big for the function to work, thus the reason R kept crashing but correct me if I am wrong.

A workaround was to break it down into only the data I needed and then separate the columns. Which turn out perfectly.

Hopefully, that fix all of the issues.
Thanks again for the help, I really do appreciate it.

[startz]

The size of the data frame doesn't have anything to do with the pipe, although the size might have interacted with the functions you are piping into.

[barobbie]

So that I can have a better understanding and avoid this in the future can you explain this a little bit more, please?

This part
"Although the size might have interacted with the functions you are piping into"

Thanks in advance!

[startz]

The pipe is just "syntactic sugar." It makes it easier to write clear code but doesn't change functionality. (Writing clear code being uber important.)

Suppose you have a function that takes two arguments, foo(a,b). Then
a %>% foo(b) is translated exactly into foo(a,b). The pipe is just a nice way of providing an argument into a function.

[barobbie]

Oh ok, I understand.
Thank you.