Douglas Bates <[EMAIL PROTECTED]> writes: [..snip..] > However, I haven't been able to work out a clever way of using > substitute to get the first part. I would like to be able to call, > e.g. > > with(fm, xyplot(resid(.) ~ carb)) > > and get a plot of resid(fm) ~ Formaldehyde$carb > > It is possible to do the first part by deparsing, substituting, and > parsing but that's inelegant. Can anyone suggest a more elegant > method?
Here's part of one, I think: > w <- function(x,y)eval(substitute(substitute(y,list(.=quote(x))))) > w(fm, xyplot(resid(.) ~ carb)) xyplot(resid(fm) ~ carb) (The double substitute is often needed in this type of problem. Things would be easier if we had a version of substitute that didn't automatically quote it's argument.) -- O__ ---- Peter Dalgaard Blegdamsvej 3 c/ /'_ --- Dept. of Biostatistics 2200 Cph. N (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907 ______________________________________________ R-devel@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
