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...s mail doesn't suite R-devel. If not, what place could there be for discussions/proposal on such code snipplets? -- CODE merge.list=function(x,y,only.new.y=FALSE,append=FALSE,...) { out=x ystructure = names(c(y,recursive=TRUE)) xstructure = names(c(x,recursive=TRUE)) yunique = ystructure[! ystructure %in% xstructure] ystructure = sapply(ystructure,FUN=function(element) strsplit(element,"\\.")) xstructure = sapply(xstructure,FUN=function(element) strsplit(element,"\\.")) yunique = sapply(yunique,FUN=function(element) strsplit(el...

Dear all, I'm using zeroinfl() from the pscl-package for zero inflated Poisson regression. I would like to calculate (aproximate) prediction intervals for the fitted values. The package itself does not provide them. Can this be calculated analyticaly? Or do I have to use bootstrap? What I tried until now is to use bootstrap to estimate these intervals. Any comments on the code are welcome.