Question

我是R studio的新手，在第2年学习数学模块。我已经设置了一个问题＆＃34;运行命令显示参赛者为男性的所有行＃34;。我尝试过使用子集函数和$，但我似乎无法弄明白。

Age = c(25, 23, 33, 28, 35, 31, 25, 29)
Gender = c(Male, Male, Female, Female, Male, Female, Female, Female)
Cinema = c(T, T, T, T, F, F, T, F)
Shopping = c(F, F, F, T, T, T, F, F)
df = data.frame(Age, Gender, Cinema, Shopping) #data frame of dating show data

这是日期框架，有人能指出我正确的方向吗？

Answer 1

首先，您需要将Gender设置为引号，以便将其识别为字符串而不是变量：

Age = c(25, 23, 33, 28, 35, 31, 25, 29)
Gender = c("Male", "Male", "Female", "Female", "Male", "Female", "Female", "Female")
Cinema = c(T, T, T, T, F, F, T, F)
Shopping = c(F, F, F, T, T, T, F, F)
df = data.frame(Age, Gender, Cinema, Shopping) #data frame of dating show data

要查看Gender = Male的所有行，您可以使用以下命令

> df[df$Gender == 'Male',]

  Age Gender Cinema Shopping
1  25   Male   TRUE    FALSE
2  23   Male   TRUE    FALSE
5  35   Male  FALSE     TRUE

选择数据框中的行

1 个答案: