row.name 在r语言中什么意思?

Question

row.name 在r语言中什么意思?

Answer 1

row.names表示行的名字（一般在矩阵中）

> x=matrix(1:9,nrow=3)
> x
[,1] [,2] [,3]
[1,] 1 4 7
[2,] 2 5 8
[3,] 3 6 9
> row.names(x) <- c("line1","line2","line3")
> x
[,1] [,2] [,3]
line1 1 4 7
line2 2 5 8
line3 3 6 9