[R] efficient test for missing values (NAs)

Ali Tofigh alix.tofigh at gmail.com
Thu Oct 21 00:53:47 CEST 2010


What is the best way to detect whether or not a (potentially large)
matrix contains missing values (NAs) or not? I use

if (sum(is.na(x)) > 0) {...}

are there more efficient ways?

/Ali



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