Hello and sorry that I still haven´t found a solution for my problem.
I need to extract the lower and upper triangle from a square matrix
including the diagonal. This diagonal is not zero in that special case.
I tried with as.dist
w<-as.dist(w, diag = TRUE)
> w
1 2 3 4 5
1 0
2 2 0
3 3 8 0
4 4 9 14 0
5 5 10 15 20 0
but found no way to keep the diagonal that is in the matrix.
I also tried this but as I expected it makes no difference:
w<-matrix(1:25, ncol=5, nrow=5)
> upperTriangle(w)<-NA
> w
[,1] [,2] [,3] [,4] [,5]
[1,] 1 NA NA NA NA
[2,] 2 7 NA NA NA
[3,] 3 8 13 NA NA
[4,] 4 9 14 19 NA
[5,] 5 10 15 20 25
> w<-as.dist(w, diag = TRUE)
> w
1 2 3 4 5
1 0
2 2 0
3 3 8 0
4 4 9 14 0
5 5 10 15 20 0
Is there perhaps a possibility to give the diagonal as a vector
within as.dist?
I would be glad if somebody could help me.
Greetings
Birgit
Birgit Lemcke
Institut für Systematische Botanik
Zollikerstrasse 107
CH-8008 Zürich
Switzerland
Ph: +41 (0)44 634 8351
[EMAIL PROTECTED]
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