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cantara
2010 Dec 08
4
evaluating NAs in a dataframe
Hi all,
How can one evaluate NAs in a numeric dataframe column? For example, I have
a dataframe (demo) with a column of numbers and several NAs. If I write
demo.df >= 10, numerals will return TRUE or FALSE, but if the value is
"NA", "NA" is returned. But if I write demo.df == "NA", it returns as "NA"
also. I know that I can remove NAs, but would like