5.3 Matrix

m<-matrix(die,nrow=2)
m
##        [,1][,2][,3]
## [1,]   1   3   5
## [2,]   2   4   6

m<-matrix(die,nrow=2,byrow=True)
m
##    [,1][,2][,3]
##[1,]    1   2   3
##[2,]    4   5   6