On Sun, 4 Sep 2005, A Das wrote: > Just: "missing values in object". That would imply the > object was created. But then I write "dchina", and it > says "object dchina not found".
No, it would not imply the object was created. If it was an error message (rather than a warning) the object would not have been created. I presume the full message was Error in na.fail.default(object) : missing values in object If so, it sounds as though you have missing values in the id, weights, or strata variable. summary(China[,c("psu","stata","weight0x"]) will verify this. Stata will just have dropped these observations (use -svydes- to verify this). If you want to drop the observations in R you need to do this explicitly. Having missing data may be unavoidable, but if you have observations in a sample it seems that you should know how they were sampled. To drop these observations you could use obsChina <- subset(China, !is.na(psu) & !is.na(strata) & !is.na(weight0x)) and then use obsChina rather than China in the svydesign() function. -thomas > -Bobby > > --- Thomas Lumley <[EMAIL PROTECTED]> wrote: > >> On Sun, 4 Sep 2005, A Das wrote: >> >>> Thanks, Thomas. >>> Yes, that's exactly what happened: the warnings >>> came first after "data(China)", and then after >>> "dchina<-svydesign..." So the design object isn't >>> being produced? The dataset is very large, and the >>> weights were already set in Stata before >> importing. >>> Would either of those cause problems? >> >> Probably not. What was the error message from >> svydesign()? That is what >> will say what went wrong. >> >> -thomas >> > > > > > ____________________________________________________ > Start your day with Yahoo! - make it your home page > http://www.yahoo.com/r/hs > > Thomas Lumley Assoc. Professor, Biostatistics [EMAIL PROTECTED] University of Washington, Seattle ______________________________________________ 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