It's not R problem but specification of windows file system. see MSDN: http://msdn2.microsoft.com/en-us/library/aa365247.aspx
On 1/15/07, Brandt, T. (Tobias) <[EMAIL PROTECTED]> wrote: > Hi > > I cannot seem to create any files that have the name "CON" before the file > extension, i.e. all of the following fail: > > > pdf("CON.pdf") > Error in pdf("CON.pdf") : unable to start device pdf > > jpeg('CON.jpeg') > Error in jpeg("CON.jpeg") : unable to start device devWindows > > png('CON.png') > Error in png("CON.png") : unable to start device devWindows > > sink('CON.txt') > Error in file(file, ifelse(append, "a", "w")) : > unable to open connection > > > > Any filename other than this works fine. > > > png('ICON.png') > > dev.off() > null device > 1 > > png('CON1.png') > > dev.off() > null device > 1 > > sink('log.txt') > > sink() > > > > Remembering that in the old DOS days, commands like 'copy CON myfile.bat' > were common, I suspected that this has something to do with CON being a > reserved word so I tried to create the files manually in Windows explorer. > Creating files named 'CON.png', 'CON.pdf', 'CON.txt' all work fine. However > I did notice that Windows won't let me create a file named just "CON". > However since the devices that I'm trying to create have extensions, I don't > understand why they fail. > > Who can help? > > Thanks > Tobias > > > > version > _ > platform i386-pc-mingw32 > arch i386 > os mingw32 > system i386, mingw32 > status > major 2 > minor 3.1 > year 2006 > month 06 > day 01 > svn rev 38247 > language R > version.string Version 2.3.1 (2006-06-01) > > > > > Sys.info() > sysname release > version nodename > "Windows" "NT 5.1" "(build 2600) > Service Pack 2" > machine login > user > "x86" > > > > ******************** > Nedbank Limited Reg No 1951/000009/06. The following link displays the names > of the Nedbank Board of Directors and Company Secretary. [ > http://www.nedbank.co.za/terms/DirectorsNedbank.htm ] > This email is confidential and is intended for the addressee only. The > following link will take you to Nedbank's legal notice. [ > http://www.nedbank.co.za/terms/EmailDisclaimer.htm ] > > ______________________________________________ > R-help@stat.math.ethz.ch 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. > ______________________________________________ R-help@stat.math.ethz.ch 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.