WebJul 11, 2015 · dplyr::filter (df, a %in% vals) subset (df, a %in% vals) Both gives: a b 2 B 0.4481627 4 D 0.2916513. What if I have a variable name in a vector, e.g.: > names (df) [1] [1] "a". Then it doesnt work - I guess because its quoted. dplyr::filter (df, names (df) [1] %in% vals) [1] a b <0 rows> (or 0-length row.names) WebFeb 2, 2024 · We’re happy to announce the release of dplyr 1.0.4, featuring: two new functions if_all () and if_any (), and improved performance improvements of across (). You can install it from CRAN …
r - Filtering multiple data sets using lapply - Stack Overflow
WebOct 7, 2024 · Part of R Language Collective Collective 1 I would like to select rows of a data frame based on conditions on two columns that should identify a unique row. WebJan 4, 2024 · If you have a vector of logicals, I'm assuming you want to find the position of the true value. This should work. dat <- c (name1=T,name3=F,name3=T) # If you want return values: dat [which (dat)] # If you want names of which value is true: names (dat [which (dat)]) I had an actual need to do what the OP asked for, because my vector was named ... cherry myrtle
How to Select First N Rows of Data Frame in R (3 Examples)
WebThe filter () function is used to subset a data frame, retaining all rows that satisfy your conditions. To be retained, the row must produce a value of TRUE for all conditions. … WebOct 6, 2024 · 1: Using %in% to Compare two Sequences of Numbers (vectors) 2: Utilizing %in% in R to Compare two Vectors Containing Letters or Factors. 3: How to use the %in% Operator in R to Test if Value is in … WebFeb 2, 2024 · You can see a full list of changes in the release notes. if_any() and if_all() The new across() function introduced as part of dplyr 1.0.0 is proving to be a successful addition to dplyr. In case you missed it, across() lets you conveniently express a set of actions to be performed across a tidy selection of columns. across() is very useful within … flights jfk to costa rica