[R] Convert filogenetic tree to binary matrix

[vanderlei52]

I need to create a binary matrix with all node of a phylogenetic tree and the
presence of each taxo in their respective node.

Example:

require(ape)
y<-read.tree(text="(E,((H,I)D,(F,G)C)B)A;")
y
plot(y, show.node=TRUE)

I need to create a binary matrix as follows:

	A	B	C	D
G	1	1	1	0
F	1	1	1	0
I	1	1	0	1
H	1	1	0	1
E	1	0	0	0

Somebody could help me to solve this problem.

Thanks,


Vanderlei Debastiani

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