Argument 'size' is what you are looking for, cf. help(readBin). Whenever reading binary files this way, I strongly recommend that you are explicit about all arguments of readBin(), e.g.
readBin(con, what=integer(), size=2, signed=TRUE, endian="little", n=n); For instance, you probably do not want 'endian' to be dependent on the platform (see help) you run on, but instead be specific to the file format you are reading. /Henrik On Wed, Feb 11, 2009 at 8:04 AM, <steve_fried...@nps.gov> wrote: > > Hello > > I'm encountering some difficulty correctly reading binary files. The binary > files store data as "short" rather than "double" , "int", or any of the > other modes of the vector being read. > > The data represents a regular grid of size 419 rows by 264 columns, to make > it more interesting, the data are daily records, for a total of 37 years. > The file size is therefore 419(rows) * 264(columns) * 365(days) * 37(years) > long. > > The product of these dimensions is 1493869080 records. > > I'm using the following code to read these into R (windows 2.8.1 ) > > con <- file(file.choose(), open="rb") > Year66 <- readBin(con, integer, signed=TRUE, n = 40374840) > close(con) > > length(Year66) > > returns 2046396 > > I'm betting that I'm defining the "what" incorrectly, but after numerous > attempts with different choices I'm wondering if readBin can handle "short" > values? > > Any help is greatly appreciated. > > Steve > > > Steve Friedman Ph. D. > Spatial Statistical Analyst > Everglades and Dry Tortugas National Park > 950 N Krome Ave (3rd Floor) > Homestead, Florida 33034 > > steve_fried...@nps.gov > Office (305) 224 - 4282 > Fax (305) 224 - 4147 > > ______________________________________________ > 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. > ______________________________________________ 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.
