glaporta wrote:
Hi list,
is it possible convert the xtabs result
xtabs(breaks~tension+wool,data=warpbreaks)
wool
tension A B
L 401 254
M 216 259
H 221 169
to a simple matrix?
A B
L 401 254
M 216 259
H 221 169
In principle it already is a matrix that is declared to be of some class
and has a call attribute. If you cannot use it as a matrix somehwre,
which I can as in
temp <- xtabs(breaks ~ tension + wool, data = warpbreaks)
t(temp) %*% temp
one way to remove the additional attributed is to say
attr(temp, "class") <- NULL
attr(temp, "call") <- NULL
for example.
Uwe Ligges
Thanks a lot! Gianandrea
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