mau...@alice.it wrote:
> Unluckily I dela with miRNA files whose name may contain the character "*".
> Because of the special meaning of "*" I have to remove it.
> I found out how to make list.files() extract only those file names which
> contain a "*"
> Namely:
> # list.files(pattern="\\*")
>
> Now I have to process all files whose name does NOT contain the character "*".
> I cannot have list.files() extract all files whose name does NOT match
> pattern="\\*
> I tried using "^" in such a pattern but nothing is returned.
> Any suggestion is welcome.
That'll be something like pattern="^[^*]*$" (untested, I don't think I
have any filenames with "*" inside...)
Alternatively, you might try
allfiles <- list.files()
withstar <- allfiles[grepl("\\*", allfiles)]
nostar <- allfiles[!grepl("\\*", allfiles)]
--
O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalga...@biostat.ku.dk) FAX: (+45) 35327907
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
