[R] Name for factor's levels with contr.sum

Andreas Wittmann andreas_wittmann at gmx.de
Tue Feb 23 21:10:56 CET 2010


Hi R-useRs,

after having read

http://tolstoy.newcastle.edu.au/R/help/05/07/8498.html

with the same topic but five years older. the solution for a contr.sum 
with names for factor levels for R version 2.10.1 will be to comment out 
the following line

#colnames(cont) <- NULL

in contr.sum i guess? by the way, with contrasts=FALSE colnames are set, 
so i don't know what the aim is to avoid this with contrasts=TRUE?

best regards

Andreas



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