Gabor wrote: At the above statement you have lost the environment of your formula.
> m$formula <- tform Replace this with: m$formula <- as.formula(tform, environment(formula)) ---------------------- No, I have not "lost" an environment. I manufactured a formula which lacked something needed, but without the necessary hint that I needed it. But that is semantics: A closer reread of help(model.frame) shows that the documentation is there, I had missed it. I'm still puzzled by recover though. Terry T. ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel