thx, everyone. this helped me debug further.
It turns out summary.polr was not my problem, though. instead, I ran
into a weird buglet with the name of my data.frame screwing up
summary.polr.
library(MASS)
N - 50
pairs - data.frame(y=as.factor(as.integer(rnorm(N)*10)),
Ivo
I think you should read the help page.
Firstly Y should be an ordered factor - you are fitting a
proportional odds model as the name suggests
Regards
Duncan
Duncan Mackay
Department of Agronomy and Soil Science
University of New England
Armidale NSW 2351
Email: home:
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