| To: | s-news@lists.biostat.wustl.edu |
|---|---|
| Subject: | setting missing value in a character matrix in S-Plus |
| From: | array chip <arrayprofile@yahoo.com> |
| Date: | Thu, 17 Feb 2005 14:09:41 -0800 (PST) |
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Hi,
how can I set some elements in a character matrix as
missing values (NAs)? for example:
x<-matrix(rep('q',30),nrow=5)
x[x=='q']<-NA
will give me a character matrix with all elements
being "NA", but not missing values NA. The above codes
work prefectly well in R, but do not give me the right
answerin S-Plus. However, the codes work well if the
input matrix x is a numeric matrix.
Thanks
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