Del row matrix r

> cbind(c(1,2,3),c(4,5,6))
[,1] [,2]
[1,]    1    4
[2,]    2    5
[3,]    3    6
> rbind(c(1,2,3),c(4,5,6))
[,1] [,2] [,3]
[1,]    1    2    3
[2,]    4    5    6

Source: datamentor.io

Del row matrix r

t1<- t1[-4:-6,-7:-9]

Source: stackoverflow.com

Del row matrix r

> x <- matrix(1:9, nrow = 3, dimnames = list(c("X","Y","Z"), c("A","B","C")))
> x
A B C
X 1 4 7
Y 2 5 8
Z 3 6 9

Source: datamentor.io

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