[R-sig-eco] Question about npmc package

ledonret at email.unc.edu ledonret at email.unc.edu
Fri Jun 20 02:48:03 CEST 2008

Hi there,

This will be a pretty easy question to answer, but since I am still 
getting my feet wet with R, any help will be very much appreciated.

I am trying to use the npmc (non-parametric multiple comparisons) 
package on my data set. Because there are 12 treatments, there are 66 
post hoc comparisons. The package returns a very nice table, but I am 
having trouble interpreting it, because the comparisons are relabeled 
with numbers (1-2, 1-3, 1-4, etc...) instead of the labels that I've 
given each treatment in the vector "class"

It seems as though setting the argument "info" should be able to return 
information like the names of the compared groups, but when I try to 
use "group.index" or when I try to set info=TRUE, I get these errors,

> npmc(data,info=group.index)
Error in npmc(data, info = group.index) : object "group.index" not found
> npmc(data,info=T)
Error in npmc(data, info = T) : unused argument(s) (info = TRUE)

Has anyone used this package and have any idea how to decipher what 
numbers correspond to what comparisons?

Thank you, in advance! Cris

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