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/
Questions tagged [tidyeval]
473 questions
0
votes
1 answer
Tidying text in a way compatible with tidy evaluation
I want to tidy up source code in a way that is compliant with tidy evaluation. Unfortunately, formatR does not preserve the !! operator.
formatR::tidy_source(text = "!!little_b", output = FALSE)$text.tidy
## [1] "!(!little_b)"
From Section 7 of…
landau
- 5,636
- 1
- 22
- 50
0
votes
1 answer
Unquoting inside of map2 with tidyeval
I'm creating a function that calculates the number of "runs" or missing or complete data - I want this to work with dplyr::group_by, so I have written this as an S3 method - below is a simplified example of this code.
Unfortunately I find that the…
Nick Tierney
- 192
- 1
- 8
0
votes
1 answer
group_by with non-scalar character vectors using tidyeval
Using R 3.2.2 and dplyr 0.7.2 I'm trying to figure out how to effectively use group_by with fields supplied as character vectors.
Selecting is easy I can select a field via string like this
(function(field) {
mpg %>% dplyr::select(field)…
Robin Gertenbach
- 10,316
- 3
- 25
- 37
0
votes
3 answers
Forwarding expressions in dots after manipulation while capturing environment
I have a function fun_1 that utilizes substitute() on its ... argument, and another function fun_2 with signature fun_2(...) that implements the pattern do.call(fun_1, dots). I want fun_1() inside fun_2() to see the ... passed to fun_2(). Here's an…
kevinykuo
- 4,600
- 5
- 23
- 31
-1
votes
2 answers
How do I use tidyeval in R to create a small prediction dataset that has all levels of factors?
I am trying to obtain a prediction grid using the modelr::data_grid() function that has all levels for one factor of a model and only the "typical" level for the other factor in a model. The wrinkle is that the call levels() on the factor held…
Matthew Loop
- 15
- 6
-2
votes
1 answer
Use value inside variable in dplyrs left_join
I have a variable like this:
name = "ID"
and i want to use the value ("ID") to join a dataframe to another like this:
left_join(df1, df2, by=c(name = "col_to_join")
but I again don't know how to do this :/
with a little example
a = mtcars %>%
…
Lenn
- 1,283
- 7
- 20
-2
votes
1 answer
Using NSE enquo with dply and tidyr (issue with complete(nesting(...), ...)
I'm trying to use the NSE with dplyr and tidyr.
I have a list of product, their volume per month per region. The products and regions have hierarchical structure (ProductLevel1 coarser than ProductLevel2 coarser than Product Level3 ...). Before…
Fabien N.
- 35
- 5