On 25/11/2009 7:34 AM, Jason Rupert wrote:
I've got an error with the way I'm using readBin on a binary file of unknown internal structure. I know the structure consists of rows and columns, but I'm not sure how many of each. So, does anyone know of a valid test set of binary data that I could reference while trying to figure out the technique of using readBin? It would be really helpful to try out readBin on a readily available and understood binary file instead of starting with one of dubious internal structure.
You can write your own. For example,
f <- tempfile() writeBin(as.numeric(1:100), f) The hexView package is very nice for seeing what you've got: library(hexView) viewRaw(f) which will show something like this: 0 : 00 00 00 00 00 00 f0 3f 00 00 00 00 00 00 00 40 | .......?.......@ 16 : 00 00 00 00 00 00 08 40 00 00 00 00 00 00 10 40 | .......@.......@ 32 : 00 00 00 00 00 00 14 40 00 00 00 00 00 00 18 40 | .......@.......@ ... viewRaw(f, human="real") will show 0 : 00 00 00 00 00 00 f0 3f 00 00 00 00 00 00 00 40 | 1 2 16 : 00 00 00 00 00 00 08 40 00 00 00 00 00 00 10 40 | 3 4 32 : 00 00 00 00 00 00 14 40 00 00 00 00 00 00 18 40 | 5 6 48 : 00 00 00 00 00 00 1c 40 00 00 00 00 00 00 20 40 | 7 8 ... Duncan Murdoch ______________________________________________ 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.
