我转换了一个数据框,但我找不到提取第一行行名的方法(在我的例子中它' s" color"):
df <- read.table(text = " color birds wolfs
red 9 7
red 8 4
red 2 8
red 2 3
black 8 3
black 1 2
black 7 16
black 1 5
black 17 7
black 8 7
black 2 7
green 20 3
green 6 3
green 1 1
green 3 11
green 30 1 ",header = TRUE)
df_t<-t(df)
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [,13] [,14] [,15] [,16]
color "red" "red" "red" "red" "black" "black" "black" "black" "black" "black" "black" "green" "green" "green" "green" "green"
birds " 9" " 8" " 2" " 2" " 8" " 1" " 7" " 1" "17" " 8" " 2" "20" " 6" " 1" " 3" "30"
wolfs " 7" " 4" " 8" " 3" " 3" " 2" "16" " 5" " 7" " 7" " 7" " 3" " 3" " 1" "11" " 1"
如果我使用:df_t[1,1]
我得到:
color
"red"
如何只提取字符串&#34; color&#34;并保存它。
答案 0 :(得分:3)
我们可以使用names
str1 <- names(df_t[1,1])
str1
#[1] "color"
答案 1 :(得分:3)
在您的示例中,"color"
是行名称之一。试试rownames(df_t)[1]