I get an error message when trying to specify a scale offset using geese() in library(geepack). Here is a dummy example:
v <- rep( 1:2, each = 100 ) x <- rnorm( 200 ) * sqrt( v ) i <- 1:200 summary( geese( x~1, id=i ) ) # works ok summary( geese( x~1, id=i, soffset=v ) ) # fails Error in geese.fit(x, y, id, offset, soffset, w, waves, zsca, zcor, corp, : mean.link invalid. ______________________________________________ R-help@r-project.org 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.