ha26
September 13, 2020, 7:57am
1
Hi, I am a newbie and this thing is driving me crazy. I try to install the packages and I am receiving the following messages, what can I do differently to install these packages?
install.packages("dplyr", lib = "C:/Users/ahmed/Documents/R/win-library/4.0")
install.packages("caret", lib = "C:/Users/ahmed/Documents/R/win-library/4.0")
install.packages("doParallel", lib = "C:/Users/ahmed/Documents/R/win-library/4.0")
trying URL 'https://cran.rstudio.com/bin/windows/contrib/4.0/dplyr_1.0.2.zip '
Content type 'application/zip' length 1309084 bytes (1.2 MB)
downloaded 1.2 MB
package ‘dplyr’ successfully unpacked and MD5 sums checked
The downloaded binary packages are in
C:\Users\ahmed\AppData\Local\Temp\RtmpUdav9r\downloaded_packages
This message shows that dplyr
was properly installed. Are you having trouble using the package?
ha26
September 13, 2020, 5:56pm
4
so when I try to run my code, I receive the following message
could not find function "%>%"
is it because the library is not installed?
Once you have installed a package, you need to load it into your session in order to use functions from the package. To use dplyr
for example, you would call library(dplyr)
at the top of your script.
ha26
September 13, 2020, 6:32pm
6
I have done that,
install.packages("dplyr", lib = "/Users/ahmed/Documents/R/win-library/4.0")
install.packages("caret", lib = "/Users/ahmed/Documents/R/win-library/4.0")
install.packages("doParallel", lib = "/Users/ahmed/Documents/R/win-library/4.0")
library(dplyr)
library(caret)
library(doParallel)
Then when I run this, I receive this message
Attaching package: �dplyr�
The following objects are masked from �package:stats�:
filter, lag
I understand that filter function from dplyr will be applied first,
but when I try to run this code
load('2019flights.Rdata')
flightsNotCancelled = df %>%
filter(CANCELLED == 0) %>%
na.omit
I receive the following error
Error in UseMethod("filter_") : no applicable method for 'filter_' applied to an object of class "NULL"
What defines the df object in your code?
system
Closed
October 4, 2020, 8:45pm
8
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