[R] problem with lower, upper triangles and diagonal
Birgit Lemcke
birgit.lemcke at systbot.uzh.ch
Tue Oct 9 16:29:14 CEST 2007
Hello R user!
I have again a problem and sometimes I have the feeling that I will
never learn to solve my problems by myself.
But I found no solution in the searchable archieves or somewhere else.
I have a square data.frame with distance values. In this special case
the upper and the lower triangle are not the same and the diagonal is
not containing zero.
I need first the lower triangle including the diagonal (but not as
zero) to perform a Manteltest in comparison with another triangle.
I tried first as.dist and it worked very well for the lower triangle
but then I became aware of the diagonal handling as zero.
I found no option to get only the upper triangle including the
diagonal in as.dist.
Secondly i need also the upper triangle including the diagonal to
perform a Manteltest.
Could anybody help me with this problem.
I appologise in advance, because I was to stupid to find the
solution by myself.
Thanks a lot.
Regards
Birgit
Birgit Lemcke
Institut für Systematische Botanik
Zollikerstrasse 107
CH-8008 Zürich
Switzerland
Ph: +41 (0)44 634 8351
birgit.lemcke at systbot.uzh.ch
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