group_by and rename at the same time
TIL (technically, it’s not today. But I found this in my notes last semester, and I think it’s worth sharing):
output$tbl2 <- renderDT( hwm %>% group_by( State = stateName, Type = hwm_environment) %>% summarize(...)
This is a very useful trick. It’s a bit like
dplyr::rename, but it’s more flexible. You can use it to rename columns, while grouping by one or more columns.