This tutorial has demonstrated how todeal with the dplyr message “`summarise()` has grouped output by ‘gr1’. You can override using the `.groups` argument.”in the R programming language. In case you have further questions, tell me about it in the comments section below....
If the number of rows varies, you get "keep" (note that returning a variable number of rows was deprecated in favor ofreframe(), which also unconditionally drops all levels of grouping). In addition, a message informs you of that choice,unless the result is ungrouped, the op...