R语言中,cbind和rbind区别

cbind： 根据列进行合并，即叠加所有列，m列的矩阵与n列的矩阵cbind()最后变成m+n列，合并前提：cbind(a, c)中矩阵a、c的行数必需相符

rbind： 根据行进行合并，就是行的叠加，m行的矩阵与n行的矩阵rbind()最后变成m+n行，合并前提：rbind(a, c)中矩阵a、c的列数必需相符
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> a <- matrix(1:12, 3, 4)
> print(a)
     [,1] [,2] [,3] [,4]
[1,]    1    4    7   10
[2,]    2    5    8   11
[3,]    3    6    9   12
> b <- matrix(-1:-12, 3, 4)
> print(b)
     [,1] [,2] [,3] [,4]
[1,]   -1   -4   -7  -10
[2,]   -2   -5   -8  -11
[3,]   -3   -6   -9  -12
> x=cbind(a,b)
> print(x)
     [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8]
[1,]    1    4    7   10   -1   -4   -7  -10
[2,]    2    5    8   11   -2   -5   -8  -11
[3,]    3    6    9   12   -3   -6   -9  -12
> y=rbind(a,b)
> y
     [,1] [,2] [,3] [,4]
[1,]    1    4    7   10
[2,]    2    5    8   11
[3,]    3    6    9   12
[4,]   -1   -4   -7  -10
[5,]   -2   -5   -8  -11
[6,]   -3   -6   -9  -12
> c <- matrix(-1:-20, 4, 5)
> c
     [,1] [,2] [,3] [,4] [,5]
[1,]   -1   -5   -9  -13  -17
[2,]   -2   -6  -10  -14  -18
[3,]   -3   -7  -11  -15  -19
[4,]   -4   -8  -12  -16  -20
> x2=cbind(a,c)
Error in cbind(a, c) : number of rows of matrices must match (see arg 2)
> print(x2)
Error in print(x2) : object 'x2' not found
> y2=rbind(a,c)
Error in rbind(a, c) : 
  number of columns of matrices must match (see arg 2)
> print(y2)
Error in print(y2) : object 'y2' not found
> 

版权声明：本文为CSDN博主「SThranduil」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/SThranduil/java/article/details/70316276