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R 组内的唯一ID_R_Dplyr - Fatal编程技术网
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R 组内的唯一ID

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R 组内的唯一ID,r,dplyr,R,Dplyr,我有以下数据集： 数据我们可以使用匹配（函数） 或使用因子 data[, ID := as.integer(factor(player, levels = unique(player))), match] data # match player team ID #1: 1 Dave Australia 1 #2: 1 Dave Australia 1 #3: 1 Dennis Australia 2 #4: 1 Dave Aust

我有以下数据集：



数据我们可以使用
匹配
（函数）

或使用
因子


data[, ID := as.integer(factor(player, levels = unique(player))), match]
data
#   match player      team ID
#1:     1   Dave Australia  1
#2:     1   Dave Australia  1
#3:     1 Dennis Australia  2
#4:     1   Dave Australia  1
#5:     2   Jake   England  1
#6:     2   Jake   England  1
#7:     2   Josh   England  2
#8:     2   Jake   England  1





dplyr
中的类似选项为


library(dplyr)
data %>%
   group_by(match) %>%
   mutate(ID = match(player, unique(player)))



library(dplyr)
data %>%
   group_by(match) %>%
   mutate(ID = match(player, unique(player)))