[R] RegExp Question

[Peter Dalgaard BSA]

Peter Malewski <peter.malewski at gmx.de> writes:

> gsub("F\.","d",c("F123","F.123"),extended=F)
> [1] "d23"  "d123"
> 
> the problem is that the "F123" string is replaced (escaping "." 
> does not work??). What can I do?

Escape more:

> gsub("F\\.","d",c("F123","F.123"),extended=F)
[1] "F123" "d123"

Notice that

> "F\."
[1] "F."



-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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