Never used coplot, but why not try removing the rows with missing variables?
Perhaps with:
dat <- cbind(E2=resid(baea.ancova6, type = "normalized"), year, population)
coplot(E2~year|population, data=dat[apply(dat, 1, function(x) !any(is.na
(x))),])
Regards,
Simon Knapp
On Mon, Jan 18, 2010 at 6:
Hello - I'm trying to construct a coplot to check the residuals conditioned
on a factor using the following formula, however I keep getting an error
message. I've used the same formula for another data set and it worked fine
- the only difference is that now I have missing values for each level (
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