I'm trying to track down a problem I'm having in the Zelig package and have stumbled across a very odd difference in the method dispatch for a derived S4 class.
Specifically, I have an object of class ZeligS4vglm, which is a subclass of vglm and vlm respectively (these are from the VGAM package). summary() at the command line prompt of this object calls summary.vglm, which is what I expect to happen. However, when summary() is called on this object from within another summary() (summary.MI in Zelig... MI is an S3 class wrapping a number of ZeligS4vglm objects in this case), it appears to be using the generic summary() method and ignoring the summary methods defined for the object: Browse[1]> summary(object[[1]]) Length Class Mode [1,] 1 ZeligS4vglm S4 I assume this has something to do with protecting the programmer from infinite recursion into summary() - i.e. so summary.object <- function(x) { summary(x) } doesn't blow up the stack - but is there a workaround? Chris -- Christopher N. Lawrence <[EMAIL PROTECTED]> Assistant Professor of Political Science (non-tenure-track) Saint Louis University 109 Fitzgerald Hall 3500 Lindell Boulevard St. Louis, Missouri 63103-1021 Website: http://www.cnlawrence.com/ ______________________________________________ R-help@stat.math.ethz.ch mailing list 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.