在R中对data.frame进行子集化

Question

我有一个数据框

players    games
-------    ------
roger     tennis
messi     football
agasi     tennis

现在我想获得一个只包含game = tennis的数据框

player    games
roger     tennis
agasi     tennis

如何使用R语言提取仅包含games = tennis的数据框？

Answer 1

ananth <- data.frame(players = c("roger", "messi", "agassi"), game = c("tennis", "football", "tennis"))
subset(ananth, game == "tennis")

我想你可能会从阅读R简介中受益.