[R] strsplit behavior

Thomas Lumley tlumley at u.washington.edu
Mon Dec 17 18:59:26 CET 2001

On Mon, 17 Dec 2001, Niels Waller wrote:
> I am trying (with no success) to split a string at a period. Should I be
> using a different function?
> > strsplit(x,".")
> [[1]]
> [1] "" "" "" "" "" "" ""

No, the problem is that the split argument is a regular expression, not a
character string. "." is a regular expression that matches any single

You want strsplit(x,"\\."), a regular expression that matches only the "."
character.  This *is* one of the examples in help(strsplit)


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