| To: | Bert Jacobs <b.jacobs@pandora.be>, s-news@lists.biostat.wustl.edu |
|---|---|
| Subject: | Re: Stack Column Question |
| From: | "Richard M. Heiberger" <rmh@temple.edu> |
| Date: | Fri, 24 Jun 2005 09:30:40 -0400 |
> tmp <- data.frame(matrix(0,3600,164)) > date() [1] "Fri Jun 24 09:29:49 EDT 2005" > tmp2 <- unlist(tmp[,1:160]) > date() [1] "Fri Jun 24 09:29:53 EDT 2005" > length(tmp2) [1] 576000 > 4 seconds |
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