This is just a direct translation of your plyr call in dplyr:
library(dplyr)
DF2 = summarise(group_by(DF, id, feature), value=value[which(date == max(date))])
2
solved summarizing a field based on the value of another field in dplyr
This is just a direct translation of your plyr call in dplyr:
library(dplyr)
DF2 = summarise(group_by(DF, id, feature), value=value[which(date == max(date))])
2
solved summarizing a field based on the value of another field in dplyr