| To: | s-news@lists.biostat.wustl.edu |
|---|---|
| Subject: | Logical test for missing values |
| From: | "Huszti, Ella" <ehuszti@ohri.ca> |
| Date: | Tue, 31 Jul 2001 16:25:25 -0400 |
Hi all, a short question: suppose I have a data frame called "population". Is there a logical test in S-Plus for missing values (e.g.. returns TRUE if population[3,5] is missing )? Thanks, Ella |
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