/tags/dplyr/ Recent content in dplyr on Choyang Hugo -- gohugo.io en-us Fri, 13 Mar 2020 00:00:00 +0000 /post/rowwise-operation-in-dplyr-1-0-0/ Fri, 13 Mar 2020 00:00:00 +0000 /post/rowwise-operation-in-dplyr-1-0-0/ I have written a post on rowwise operation of data frame in R a while ago. purrr::pmap() is recommended for rowwise operation in that post, since other methods have their own disadvantages. However, there will be a better rowwise operation support in dplyr 1.0.0 (will be released soon), and it is very intuitive, simple, easy to use. Basic library(dplyr) df <- tibble(x = 1:3, y = 2:4, z = 3:5) df %>% rowwise() %>% mutate(m = mean(c(x, y, z))) ## # A tibble: 3 x 4 ## # Rowwise: ## x y z m ## <int> <int> <int> <dbl> ## 1 1 2 3 2 ## 2 2 3 4 3 ## 3 3 4 5 4 We can use tidy selection syntax to succinctly select any variables with c_across().