Top "Dplyr" questions

Suppose I want to calculate the proportion of different values within each group. For example, using the mtcars data, how …

I like plyr's renaming function rename. I have recently started using dplyr, and was wondering if there is an easy …

I realize that dplyr v3.0 allows you to join on different variables: left_join(x, y, by = c("a" = "b") …

My question involves summing up values across multiple columns of a data frame and creating a new column corresponding to …

I would like to select a row with maximum value in each group with dplyr. Firstly I generate some random …

Overview I'm relatively familiar with data.table, not so much with dplyr. I've read through some dplyr vignettes and examples …

I am using the mtcars dataset. I want to find the number of records for a particular combination of data. …

I want to use dplyr::mutate() to create multiple new columns in a data frame. The column names and their …

I have a dataframe and list of columns in that dataframe that I'd like to drop. Let's use the iris …

I have two data frames that I want to join using dplyr. One is a data frame containing first names. …