Dear list members, is anyone aware of a (simple) strategy to prevent update() from introducing parentheses around a conditional rhs of a formula when updating, e.g., only its lhs? Simple example:
update( y ~ a|b, log(.) ~ .) gives log(y) ~ (a | b), but I want/need log(y) ~ a | b I do know how to extract various components of a formula and how to "re-build" formulae from such single components, but I would like to avoid that. Thx for any hint -- Gerrit --------------------------------------------------------------------- Dr. Gerrit Eichner Mathematical Institute, Room 212 gerrit.eich...@math.uni-giessen.de Justus-Liebig-University Giessen Tel: +49-(0)641-99-32104 Arndtstr. 2, 35392 Giessen, Germany Fax: +49-(0)641-99-32109 http://www.uni-giessen.de/eichner ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
