从Data.Frame连接行和列名称

Question

是否有方法将行和列名从现有data.frame连接到新数据框。例如，我有（A，B，C）的列名和（1,2，3）的行名，我想将它们组合成一个3x3矩阵[A1，B1，C1; A2，B2，C2; A2，B2，C2]。感谢您的帮助

Answer 1

的outer()功能可以帮助：

> cn <- c("A","B","C") 
> rn <- c("1","2","3") 
> outer(cn, rn, function(x,y) paste(x,y,sep="")) 
    [,1] [,2] [,3] 
[1,] "A1" "A2" "A3" 
[2,] "B1" "B2" "B3" 
[3,] "C1" "C2" "C3" 
>