R语言分析

R 函数学习 - subset()

2020-05-18  本文已影响0人  Thinkando
> selectresult=subset(df1,name=="aa")
> selectresult
  name age sex
1   aa  20   f
> df1
  name age sex
1   aa  20   f
2   bb  29   m
3   cc  30   f

(2)指定显示列

> selectresult=subset(df1,name=="aa",select=c(age,sex))
> selectresult
  age sex
1  20   f

(3)多条件查询

> selectresult=subset(df1,name=="aa" & sex=="f",select=c(age,sex))
> selectresult
  age sex
1  20   f
> df1
  name age sex
1   aa  20   f
2   bb  29   m
3   cc  30   f
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