How to interpret dplyr message `summarise()` regrouping output by x . . . The output tibble is correct, but this message appears: summarise() regrouping output by 'year' (override with groups argument) How should this be interpreted? Why does it report regrouping only by 'year' when I grouped by both year and week? Also, what does it mean to override and why would I want to do that? I don't think the message indicates a problem because it appears throughout the
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
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