r - Count number of rows by group using dplyr - Stack Overflow I am using the mtcars dataset I want to find the number of records for a particular combination of data Something very similar to the count(*) group by clause in SQL ddply() from plyr is working
r - dplyr summarise_each with na. rm - Stack Overflow Is there a way to instruct dplyr to use summarise_each with na rm=TRUE? I would like to take the mean of variables with summarise_each("mean") but I don't know how to specify it to ignore missing v
summarize () deprecated in R. What to use instead? Returning more (or less) than 1 row per summarise() group was deprecated in dplyr 1 1 0 ℹ Please use reframe() instead ℹ When switching from summarise() to reframe(), remember that reframe() always returns an ungrouped data frame and adjust accordingly Call lifecycle::last_lifecycle_warnings() to see where this warning was generated
Get dplyr count of distinct in a readable way - Stack Overflow Use filter to filter out any rows where aa has NAs, then group the data by column bb and then summarise by counting the number of unique elements of column aa by group of bb As you can see I'm making use of the pipe operator %>% which you can use to "pipe" or "chain" commands together when using dplyr