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Dear all! I'd like to do multiple imputation of missing values with s-plus libraries that are provided by Shafer (http://www.stat.psu.edu/~jls/misoftwa.html). I wonder, whether these libraries are compatible or somehow convertible to R (because I don't have S-plus), so that I can use this functions using the R Program. I would be happy if you could tell me, -if it is possible to use

Hello Everyone,   Learning about R and its wonderful array of functions. If it's not obvious, I usually try to find out what a function stands for. I think this helps me remember better.   One function that has me stumped is "sink." Can anyone tell me if this stands for something?   Thanks,   Paul         __________________________________________________ [[alternative HTML

Dear all, just a stupid R question, since the results puzzle me a bit: > sum(c(NA,NA), na.rm=TRUE) [1] 0 > NA + NA [1] NA > NA + 1 [1] NA > Why does sum(c(NA,NA), na.rm=TRUE) return 0 and not NA? Thanks in advance, Will