A list of columns generated by vars() , a character vector of column names, a numeric vector of column positions, or NULL . .cols. This argument has been ...
People also ask
What is the function mutate_at in R?
What is the difference between mutate and mutate_all?
What is the use of mutate in R?
Can you mutate multiple variables at once in R?
Aug 29, 2016 · I'd like to use dplyr's mutate_at function to apply a function to several columns in a dataframe, where the function inputs the column to which ...
Apr 30, 2019 · Description. Applies functions that return results of length 1. Can perform multiple calculations in the same call. Usage. summarise ...
step_mutate_at() creates a specification of a recipe step that will modify the selected variables using a common function via dplyr::mutate_at() . Usage.
Oct 18, 2022 · Hi all,. I'm trying to divide everything in columns named P3[something] with a corresponding matching value. However, my mutate_at is simply ...
Jun 26, 2020 · A line of code I use nearly every time I open R is df %<% mutate_at(vars("variable1","variable 2", etc.),factor) to change multiple things into ...
_at affects variables selected with a character vector or vars(). _if affects variables selected with a predicate function: Usage. mutate_all(.tbl, .funs, ..
Feb 14, 2019 · As a simple example, let's say you have a normalising constant in one dataframe column and you need to normalise many other columns.
May 20, 2019 · Some code we have as part of a function in an internal R package started failing tests that previously worked as of a few weeks ago (the ...
Aug 28, 2020 · Explanation: across() takes three arguments (plus ... ), they are the columns we want to act on (very similar to the first argument in mutate_at ...