将矩阵的每列乘以向量

Question

我有

mat<-matrix(1:12,3)
vect<-c(2,2,2) 

如何将每列乘以向量以获得:

2,  8, 14, 20
4, 10, 16, 22
6, 12, 18, 24

Answer 1

vect*mat
     [,1] [,2] [,3] [,4]
[1,]    2    8   14   20
[2,]    4   10   16   22
[3,]    6   12   18   24

载体vect按柱回收.最好尝试不同的值来查看过程.