Yes, I've been messing with that. I've also been using the hexView package. Reading as characters first is just helping me figure out the structure of this binary file. In this situation it really helped. For example: È \001 \002 200 1 2
This probably isn't how I'll do it in my final draft. I'm now looking for a date or series of dates in the binary file... I'm guessing the dates will be represented as 3 integers one for month, day, and year. Any help on strategy help here would be great... I'm reading a file with a dbs extension if that helps. Thanks! ben On Fri, Jun 8, 2012 at 12:44 PM, William Dunlap <wdun...@tibco.com> wrote: > When reading binary files, it is usually best to use readBin's**** > > what=, size=, signed=, and endian= arguments to get what you want.**** > > Reading as characters and then converting them as you are doing**** > > is a very hard way to do things (and this particular conversion doesn't*** > * > > make much sense).**** > > ** ** > > Bill Dunlap**** > > Spotfire, TIBCO Software**** > > wdunlap tibco.com**** > > ** ** > > *From:* Ben quant [mailto:ccqu...@gmail.com] > *Sent:* Friday, June 08, 2012 11:40 AM > *To:* William Dunlap > > *Cc:* r-help@r-project.org > *Subject:* Re: [R] remove leading slash**** > > ** ** > > Okay, Bill smelt something wrong, so I must revise. > > This works for large numbers: > > prds = sapply(sapply(cnt_str,charToRaw),as.integer) > > PS - this also solves an issue I've been having elsewhere... > PPS- Bill - I'm reading binary files...and learning. > > thanks! > ben > > **** > > On Fri, Jun 8, 2012 at 12:16 PM, William Dunlap <wdun...@tibco.com> wrote: > **** > > Can you tell us why you are interested in this mapping? > I.e., how did the "\001" and "\102" arise and why do you > want to convert them to the integers 1 and 102? > > Bill Dunlap > Spotfire, TIBCO Software > wdunlap tibco.com**** > > > > > -----Original Message----- > > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] > On Behalf > > Of Ben quant > > Sent: Friday, June 08, 2012 11:00 AM > > To: Duncan Murdoch > > Cc: r-help@r-project.org > > Subject: Re: [R] remove leading slash > > > > Thanks for all your help. I did it this way: > > > > > x = sapply(cnt_str,deparse) > > > x > > \002 \001 \002 > > "\"\\002\"" "\"\\001\"" "\"\\102\"" > > > as.numeric(substr(x,3,5)) > > [1] 2 1 102 > > > > ...which is a bit of a hack, but gets me where I want to go. > > > > Thanks, > > Ben > > > > On Fri, Jun 8, 2012 at 11:56 AM, Duncan Murdoch < > murdoch.dun...@gmail.com>wrote: > > > > > On 08/06/2012 1:50 PM, Peter Langfelder wrote: > > > > > >> On Fri, Jun 8, 2012 at 10:25 AM, David**** > > > Winsemius<dwinsemius@comcast.**net<dwinsem...@comcast.net>>**** > > > >> wrote: > > >> > > > >> > On Jun 8, 2012, at 1:11 PM, Ben quant wrote: > > >> > > > >> >> Hello, > > >> >> > > >> >> How do I change this: > > >> >>> > > >> >>> cnt_str > > >> >> > > >> >> [1] "\002" "\001" "\102" > > >> >> > > >> >> ...to this: > > >> >>> > > >> >>> cnt_str > > >> >> > > >> >> [1] "2" "1" "102" > > >> >> > > >> >> Having trouble because of this: > > >> >>> > > >> >>> nchar(cnt_str[1]) > > >> >> > > >> >> [1] 1 > > >> > > > >> > > > >> > "\001" is ASCII cntrl-A, a single character. > > >> > > > >> > ?Quotes # not the first, second or third place I looked but I > knew I > > >> had > > >> > seen it before. > > >> > > >> If you still want to obtain the actual codes, you will be able to get > > >> the number using utf8ToInt from package base or AsciiToInt from > > >> package sfsmisc. By default, the integer codes will be printed in base > > >> 10, though. > > >> > > > > > > You could use > > >**** > > > > > as.octmode(as.integer(**charToRaw("\102")))**** > > > > [1] "102" > > > > > > if you really want the octal versions. Doesn't work so well on "\1022" > > > though (because that's two characters long). > > > > > > Duncan Murdoch > > > > > > > > >> A roundabout way, assuming your are on a *nix system, would be to > > >> dump() cnt_str into a file, say tmp.txt, then run in a shell (or using > > >> system() ) something like > > >> > > >> sed --in-place 's/\\//g' tmp.txt > > >> > > >> to remove the slashes, then use > > >> > > >> cnt_str_new = read.table("tmp.txt") > > >> > > >> in R to get the codes back in. I'll let you iron out the details. > > >> > > >> Peter > > >>**** > > > >> ______________________________**________________ > > >> R-help@r-project.org mailing list > > >> https://stat.ethz.ch/mailman/**listinfo/r- > > help<https://stat.ethz.ch/mailman/listinfo/r-help> > > >> PLEASE do read the posting guide http://www.R-project.org/** > > >> posting-guide.html <http://www.R-project.org/posting-guide.html>**** > > > >> and provide commented, minimal, self-contained, reproducible code. > > >> > > >**** > > > > ______________________________**________________ > > > R-help@r-project.org mailing list > > > https://stat.ethz.ch/mailman/**listinfo/r-help< > https://stat.ethz.ch/mailman/listinfo/r- > > help> > > > PLEASE do read the posting guide http://www.R-project.org/** > > > posting-guide.html <http://www.R-project.org/posting-guide.html>**** > > > > and provide commented, minimal, self-contained, reproducible code. > > > > >**** > > > [[alternative HTML version deleted]]**** > > > > > ______________________________________________ > > 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.**** > > ** ** > [[alternative HTML version deleted]]
______________________________________________ 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.
