我想根据同一组中还有哪些其他条目来更新条目。
以玩具示例为例:如果变量both.camp == 0且组中恰好缺少“ C”,我想将“ C”(camp)更改为“ B”(camp_1) “。
玩具数据集:
data <- data.frame(ID=c(1,1,1,0,0,0),date=c(1,1,1,1,1,1),both.camps=c(0,0,0,1,1,1),camp=c("A","A","C","A","B","C"))
ID date both.camps camp
1 1 1 0 A
2 1 1 0 A
3 1 1 0 C
4 0 1 1 A
5 0 1 1 B
6 0 1 1 C
尝试输入的代码:
data <- data %>% group_by(ID,date) %>% mutate(camp_2=ifelse(both.camps==0 & camp=="C" & !"B" %in% camp ,"B",
ifelse(both.camps==0 & camp=="C" & !"A" %in% camp, "A", camp)))
理想的结果
desiderata <- data.frame(ID=c(1,1,1,0,0,0),date=c(1,1,1,1,1,1),both.camps=c(0,0,0,1,1,1),camp=c("A","A","C","A","B","C"), camp_2=c("A","A","B","A","B","C"))
ID date both.camps camp camp_2
1 1 1 0 A A
2 1 1 0 A A
3 1 1 0 C B
4 0 1 1 A A
5 0 1 1 B B
6 0 1 1 C C
答案 0 :(得分:0)
这可以在较小的数据集上解决问题,我不确定这是否是最好的方法。
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