On 04/22/2013 09:00 PM, Martin Lavoie wrote:
Hi Jim
actually I did not underscore my code. I just copied and pasted the
original code you suggested.
but here is what I have on my system (I tried with csv files if I would
get a different result):
#
setwd("~/Desktop/folder/")
system("echo xxx > old.filenames.tab")
all.filenames<-list.files(pattern="[.]csv", full.names=TRUE)
old.filenames<-read.table("old.filenames.tab")
filenames<-all.filenames[!(all.filenames %in% old.filenames)]
write.table(all.filenames,file="old.filenames.tab",row.names=FALSE)
#
> all.filenames
[1] "./GMReducedF.csv" "./HLReducedF.csv" "./MinardReducedF.csv"
> old.filenames
V1
1 xxx
#
> filenames
[1] "./GMReducedF.csv" "./HLReducedF.csv" "./MinardReducedF.csv"
##Now with a few more files in the folder and after running the same
code above:
> all.filenames
[1] "./GMReducedF.csv" "./HLReducedF.csv" "./MinardReducedF.csv"
"./Site1ReducedF.csv" "./Site2ReducedF.csv"
#
> old.filenames
V1
1 x
2 ./GMReducedF.csv
3 ./HLReducedF.csv
4 ./MinardReducedF.csv
#
> filenames
[1] "./GMReducedF.csv" "./HLReducedF.csv" "./MinardReducedF.csv"
"./Site1ReducedF.csv" "./Site2ReducedF.csv"
sessionInfo()
R version 2.15.2 (2012-10-26)
Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods base
As you see filenames = all.filenames
Hi Martin,
I think this has something to do with your OS. I checked my original
reply and there are no underscores in the filenames, so they must have
been added by the OS on your end. I ran the above through my system just
to make sure that the "./" path wasn't causing any trouble and:
>
all.filenames<-c("./GMReducedF.csv","./HLReducedF.csv","./MinardReducedF.csv",
+ "./Site1ReducedF.csv","./Site2ReducedF.csv")
> old.filenames<-c("x","./GMReducedF.csv","./HLReducedF.csv",
+ "./MinardReducedF.csv")
> filenames<-all.filenames[!(all.filenames %in% old.filenames)]
> filenames
[1] "./Site1ReducedF.csv" "./Site2ReducedF.csv"
I think the above is what you want, but I can't do much about whatever
is causing the problem on the Mac. Perhaps an Apple user on the list can
help.
Jim
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