cbind&rbind

Combine R Objects by Rows or Columns

Package:

base

Take a sequence of vector, matrix or data frames arguments and combine by columns or rows, respectively. These are generic functions with methods for other R classes.

Usage

cbind(..., deparse.level = 1)

rbind(..., deparse.level = 1)

> m<-cbind(1,1:7) # the '1' (= shorter vector) is recycled

 > m     
　　　　[,1] [,2] 
[1,]    1    1 
[2,]    1    2 
[3,]    1    3 
[4,]    1    4 
[5,]    1    5 
[6,]    1    6 
[7,]    1    7

> m<-cbind(m,8:14)[,c(1,3,2)]# insert a column中间列，次序是1，3，2 
> m      
　　　　[,1] [,2] [,3] 
[1,]    1    8    1 
[2,]    1    9    2 
[3,]    1   10    3 
[4,]    1   11    4 
[5,]    1   12    5 
[6,]    1   13    6 
[7,]    1   14    7

> rbind(1,1:4)      
　　　　[,1] [,2] [,3] [,4] 
[1,]    1    1    1    1 
[2,]    1    2    3    4