WebAug 3, 2024 · Only the columns that contain “avs” in the name are returned. In this case, “mavs” and “cavs” are the only columns that are returned. Example 2: Select Columns that Contain One of Several Strings. The following code shows how to use the matches() function to select only the columns that contain “avs” or “ets” somewhere in ... WebJul 8, 2024 · We can use filter_all from dplyr. This returns a dataframe with rows that has at least one column containing the string "3": library (dplyr) mtcars %>% filter_all (any_vars (grepl ("3", .))) If we want a dataframe with rows that has all columns containing the string "3". We use all_vars instead of any_vars:
r - Subset data to contain only columns whose names match a …
WebFilter within a selection of variables. Source: R/colwise-filter.R. Scoped verbs ( _if, _at, _all) have been superseded by the use of if_all () or if_any () in an existing verb. See vignette ("colwise") for details. These scoped filtering verbs apply a predicate expression to a selection of variables. The predicate expression should be quoted ... cley binoculars
r - Filter rows that contain a certain string across all columns (with ...
Webselect columns based on multiple strings with dplyr contains () I want to select multiple columns based on their names with a regex expression. I am trying to do it with the piping syntax of the dplyr package. I checked the other topics, but only found answers about a single string. library (dplyr) mtcars [grepl ('m ar', names (mtcars ... WebDec 16, 2024 · I want to filter this tibble to remove any rows with the value "20" in any of the columns with the string "gear" in the title. Can anyone suggest how to do this? eg. something like. mtcars_new %>% dplyr::filter_at(contains("gear"), 20) mtcars_new %>% dplyr::filter(vars("gear") == 20) (But something that works..) r; dplyr; Share. Improve this ... WebOct 25, 2024 · I want to filter rows of a data frame (containing words) to only keep the words that are made of some letters. ... Verifying that a string contains only letters in C#. 331. ... How to specify columns to exclude when retaining all distinct rows? 1. add a label in a new column according to string match in R. 1. cleyburchstraat