After some headache with debugging my script, I finally isolated the problem
taht I am going to illustrate in the following example.
I expected matrix nrow to decrease consistently till 1. Instead, when the
matrix is left with one row only, its nrow jumps to 2 because the matrix
gets transposed. How come ?
Thank you,
Maura
> B <- c(1,2)
> B <- rbind(B,c(3,4))
> B <- rbind(B,c(5,6))
> B
[,1] [,2]
B 1 2
3 4
5 6
> dim(B)
[1] 3 2
> nrow(B)
[1] 3
>
> #REMOVE ROW-1 OUT OF 3
> B <- as.matrix(B[-1,])
> B
[,1] [,2]
3 4
5 6
> dim(B)
[1] 2 2
> nrow(B)
[1] 2
>
> #REMOVE ROW-2 OUT OF 3
> B <- as.matrix(B[-1,])
> B
[,1]
[1,] 5
[2,] 6
> dim(B)
[1] 2 1
> nrow(B)
[1] 2
tutti i telefonini TIM!
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