Ida Scheel <ida.scheel at nr.no> writes:
> Hei,
>
> I am trying to fit an ANOVA-model by lm. I get the error-message
>
> Error in lm.fit(x, y, offset = offset, ...) :
> negative length vectors are not allowed
>
> which I don't understand. My data looks fine, but one factor has
> extremely many levels. Does anyone have a tip?
Not really. It sounds like it might be a bug. How many levels? Can you
generate a simple example (possibly with simulated data) showing the
same behaviour?
--
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907