Nothing
# $Id: coefFrame.R 625 2005-06-09 14:20:30Z nj7w $
coefFrame <-
function (mod, data, by = NULL, fit.on = TRUE, fitfun, keep.unused.levels = TRUE,
byvar.sep = "\001" , ...)
{
fit.on <- eval(substitute(fit.on), data, parent.frame())
out <- frameApply(data, on = intersect(all.vars(mod), names(data)),
by = by, subset = fit.on, byvar.sep = byvar.sep, fun = function(sub.dat,
...) {
fit <- try(fitfun(mod, data = sub.dat, ...), silent = TRUE)
if (inherits(fit, "try-error"))
return(fit)
outi <- coef(fit)
outi
}, ...)
if (keep.unused.levels)
out <- unique(merge(data[by], out, all.x = TRUE))
out
}
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