When I tried it on Windows XP there was a grinding sound, probably memory being swapped and it just seemed to go on forever and I finally had to kill R. I am using "R version 2.2.1, 2005-12-20". What did seem to work was this:
gregexpr("X", gsub("\\b\\w|\\w\\b", "X", text)) where "X" should be replaced with some character not in the text. On 1/31/06, Stefan Th. Gries <[EMAIL PROTECTED]> wrote: > Hi > > I have a question concerning how to match word boundaries which I bet has a > very simple answer, but I haven't found it with trial and error nor by > searching the help archives for the terms in the subject line. The problem is > this: I have a vector of two character strings. > > text<-c("This is a first example sentence.", "And this is a second example > sentence.") > > If I now look for word boundaries with regexpr, this is what I get: > > regexpr("\\b", text, perl=TRUE) > [1] 1 1 > attr(,"match.length") > [1] 0 0 > > So far, so good. But with gregexpr I get: > > > gregexpr("\\b", text, perl=TRUE) > Error: cannot allocate vector of size 524288 Kb > In addition: Warning messages: > 1: Reached total allocation of 1015Mb: see help(memory.size) > 2: Reached total allocation of 1015Mb: see help(memory.size) > > Why don't I get the locations and extensions of all word boundaries? > > I am using R 2.2.1 on a machine running Windows XP: > > R.version > _ > platform i386-pc-mingw32 > arch i386 > os mingw32 > system i386, mingw32 > status > major 2 > minor 2.1 > year 2005 > month 12 > day 20 > svn rev 36812 > language R > > Thanks a lot, > STG > -- > Stefan Th. Gries > ---------------------------------------- > University of California, Santa Barbara > http://people.freenet.de/Stefan_Th_Gries > > ______________________________________________ > 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 > ______________________________________________ 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