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Questions tagged [tidyselect]

Questions about `r` package `tidyselect` used in many functions from the `tidyverse` packages

88 questions
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Remove string in multiple variables in R

Here is a MWE of my data from which I want to remove the string "NaN" from all the columns which contain "Med" df= data.frame(id= rep(1:5, each=1), Med1 = c("GN", "GN", "Ca", "Ca", "DM"), Med2 = c("DM", "NaN", "Mob",…
Mark Davies
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tidyselect::where() inconsistencies: where is where()?

Summary: You can do rename(A=1, B=2), can you do the same using rename_with()? my ~str_replace(... paste0()) works, I don't need to change that. But it only works for one variable at a time. Tidyselect suggests wrapping where(~str_replace...) but…
ibm
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Why does pivot_longer() only work when I specify the dataframe inside the brackets, not with pipe notation?

I was trying to rearrange a dataframe using dataframe %>% pivot_longer( ) but would keep getting errors however I tried to specify the cols argument. For instance, trying cols = (!colname) I'd get: Error: no applicable method for 'pivot_longer'…
Ellen
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Select multiple date columns and convert factor variables to date

I have a data.frame with multiple columns that contain dates. At present they are recognised as "factor" class. I want to select all the columns that should be dates (there are 10 of them, they all have "Date" in their name, e.g. Date_Construc,…
Mark Davies
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Evaluation with dplyr::select does not work in my function

I am really new on dealing with evaluation issues in R. example<- data.frame(id = 1:5, pairs0 = c(1, 1, 1, 2, 2), pairs1 = c(2, 2, 1, 1, 1) ) Here is the function that I am trying to write: f…
Arthur Carvalho Brito
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Replacing mean from psych::describe for mode in dataframe

I like the summary statistics of psych::describe but I want to replace the mean with the mode but only for factor variables. How do I program Mode's output to replace setosa (or any other factor variable) I use iris for replication even though it…
ibm
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Error in mutate_at when trying to create new variables using tidyselect function when knitting R markdown

It's highly likely that I'm missing something really simple, but I cannot work out why this error is persisting in my mutate_at function. library(tidyverse) test = data.frame(diff_1 = sample(0:10, size=20, replace=TRUE), diff_2 =…
Dani
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R package - tidyselect install fails

Trying to install tidyselect R pacakge on amazon linux, it fails with ERROR: lazy loading failed for package ‘tidyselect’. Please guide me on installing this package, kindly refer the below output, bash-4.2# /usr/bin/R CMD INSTALL…
Karthikeyan Janakiraman
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How to prefix column names of data.frame which are !%in% list with dplyr::rename?

I have a list of column names which I do NOT want to change colsNotRename. All the other columns I do want to prefix. A way to do it in BaseR would be e.g.: xx <- data.frame(A = 1:3, B = 3:5, Unknown = c("A","B","C")) colsNotRename <-…
witek
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How to use the new vars_rename function

I am trying to use the new suggested vars_rename() function in tidyselect after getting a soft warning that rename_at() in Dplyr is being deprecated. But, I'm having no luck getting it to work and the documentation is cryptic. It tells me to use…
Larry V
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caret: 'rlang_env_get' not found

I ran library(caret) a few days ago, and it worked. Since then I've updated Rtools, and now I'm getting some errors I can't resolve through my usual methods Information below for error: > library(caret) Error: package or namespace load failed for…
Jonny Phelps
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Create a matrix from all variables in each row

I have a dataframe that stores a set of vectorized matrices. That is, in each row, I have the NxM variables that correspond to the elements in the matrix. Given this dataframe, I would like to apply a function to the matrix stored in each row, and…
alberto
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helper function in R

I am trying to replace NA with 0 for some specific variables irrespective of their positions. i wrote below code, but getting some error.. data1[, starts_with("Year_")][is.na(data1[, starts_with("Year_")])] <- 0 i got the below error Error: No…
supratik ghosh
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