R语言数据的查询筛选-subset()

subset(x, subset, select, drop = FALSE, ...)blog &多条件查询io  select 显示指定列class selectresult=subset(df1,name=="aa" & sex=="f",select=c(age,sex))select 负号排除指定列im selectresult=subset(df1,name=="aa" & sex==

>>阅读原文<<