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ecology
2011 Sep 13
1
mvpart analyses with covariables
Hi all,
I am fairly new to R and I am trying to run mvpart and create a MRT using
explanatory variables and covariables. I've been following the procedures in
Numerical Ecoogy with R.
The command (no covariables) which works fine -
ABUNDTMRT <- mvpart(abundance ~
.,factors,margin=0.08,cp=0,xv="1se",xval=nrow(abundance),xvmult=100,which=4)
where abundance is 4th root transformed fish abundance (103 species x 168
samples), and factors is the relief (high, m...