[R] RegExp Question

[Peter Malewski]

I have to admit that I'm a bit ignorant about 
regular expressions...I have a problem with "gsub":

under unix I can :

> cat tmp.txt
F.123 F.123
F123 F123
sed 's/F\./d/g' tmp.txt
d123 d123
F123 F123

that is: replacing "F.", however under R:

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?

Thanks 
Peter







-- 
P.Malewski, Limmerstr.47, 30451 Hannover, 0511-2135008
At work: http://www.MH-Hannover.de 0511 532 3194 / Fax: 0511 532 3190, 
P.Malewski at tu-bs.de, peter.malewski at gmx.de, malewski.peter at mh-hannover.de.
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._