Last data update: 2014.03.03
After a data frame has been grouped and then ungrouped, this function acts as a shorthand (and faster way) to reinstate grouping.
regroup(.self, auto_partition = NULL) groupwise(.self, auto_partition = NULL)
.self
Data frame
auto_partition
Re-partition across cluster after operation
dat <- Multiplyr (x=1:100, G=rep(c("A", "B"), length.out=100)) dat %>% group_by (G) dat %>% ungroup() %>% regroup() dat %>% summarise (N=length(x)) dat %>% shutdown()