cheetahfly 发表于 2017-3-26 22:02
library(dplyr)
data %>%
    group_by(sectorcode) %>%

cheetahfly 发表于 2017-3-26 22:02
library(dplyr)
data %>%
    group_by(sectorcode) %>%

cheetahfly 发表于 2017-3-27 13:14
sector_gtatypes %>%
    group_by(sectorcode) %>%
    filter(sector_gtanum == max(sector_gtanum)) % ...