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Questions tagged [tidyeval]

Please use this tag for questions about using tidy evaluation within the tidyverse framework. For more information please refer to this handbook: https://tidyeval.tidyverse.org/

473 questions
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Create new column using tidy evaluation on the left and right of mutate in R

I know there are many questions regarding tidy evaluation in R. However, I couldn't figure out a solution to this seemingly easily problem. I have this data.frame structure(list(Date = c("25.02.2020", "26.02.2020", "27.02.2020", "28.02.2020",…
Lenn
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How to correctly glue together prefix/suffix in a function call RHS

I'm attempting to iterate over a list of column suffixes and, for each, call a function to perform a bunch of summarises. My problem is how to correctly build the variable name and have R interpret it correctly. I've tried various combinations of…
Ian
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Curly curly operator inside survey function

I have a survey data with weight column like this dummy sample: df <- structure( list( device = c( "Digital", "No Device", "No Device", "Digital", "Digital", "No Device", "Digital", "Digital", …
DanG
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Pmap over tidyeval function

I have created the following function to count the number of terminations in a company by variable in the dataframe. emp_term_var <- function(data, colName, year = "2015") { colName <- enquo(colName) term_test <- data %>% …
Taren Shaw
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Passing enquo expression to subfunction

This question is related to Passing variables to functions that use `enquo()`. I have a higher function with arguments of a tibble (dat) and the columns of interest in dat (variables_of_interest_in_dat). Within that function, there is a call to…
IrisOren
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issues with dplyr group_by within a custom function; related to tidyeval?

I'm trying to write a function to make a long three way contingency table use group_by and summarize from dplyr. I start with a tibble containing 3 factor variables: year, mammogram and sp. > c_table_fn <- function(x){ + factors %>% +…
Sean McClellan
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Assign into variable from string

I would like to dynamically create a variable name from a string and then assign in a value. I believe I should be able to easily do this with {rlang} but haven't been able to work it out from package docs, Advanced R, and searching. Below is a…
maia-sh
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Mutate column inside function on both sides of equation

Been trying to do something very simple, but I'm still having troubles with tidyeval. I have a numeric column from a dataframe and want to turn it into a string, let's say: id code 1 10 2 14 And I want to turn code into a string in this case,…
Juan C
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Turning dplyr code into function that accepts columns as arguments

I've been fighting trying to understand tidyeval and the use of quo, quos, sym, !!, !!! and the like. I made some attempts, but couldn't generalize my code so it accepts a vector of columns and applies text processing to those columns on a…
Juan C
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tidyeval: !! with purrr::map anonymous functions

I would like to create a single column by conditional logic across multiple columns. This is a minimal reproducible example. As you can see, the double bang seems to cause evaluation of the .x before the anonymous function is defined. Any ideas for…
user2376418
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How to get specific values out of a list of values passed to one argument of a UDF with tidyeval

I used tidyeval to write a short function which takes grouping variables as an input, groups the mtcars dataset and counts the number of occurences per group: test_function <- function(grps){ mtcars %>% group_by(across({{grps}})) %>% …
mafiale
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Question on R programming with dplyr and tidy evaluation

Folks I have a couple of questions about how tidy evaluation works with dplyr The following code produces a tally of cars by cylinder using the mtcars dataset: mtcars %>% select(cyl) %>% group_by(cyl) %>% tally() With output as expected: # A…
MattStatsNeale
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How to get object name as a string using tidyevaluate?

I need to pass column names to the plotting function. The problem is that my column names are in the arguments and I don't know how to extract those as text. Here is code that works, but I need to get the strings dynamically from the…
MesRot
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How to mutate variable with tidyevaluation

I'm trying to create a function that prints a plot when user inputs data and variables what to plot. My current problem is that group/subgroup columns may be numeric so I need to mutate them into factors before plotting. I'm trying to do it with…
MesRot
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Adding a point based on data to ggplot

I have this issue where I have to add a "target" point to an existing plot, based on a value in the data. For example, in the reprex - to make a point at (2010, 605). (target year, 110% of 2008 profit) I know I can calculate before plotting ... but…
dcurrie27
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