On Wed, Dec 9, 2009 at 4:58 PM, Jonathan Thayn <jth...@ilstu.edu> wrote: > Hopefully there is a simple solution to this problem. I process really large > satellite images in R and, in order to not offend the memory-limitation > demi-gods, I open each row of the imagery one at a time, process it, write > the results, and then open the next line. I use readBin() to open each line. > For examaple, say I have the following file: > > writeBin(1:20,con="desktop/temp.bip",size=2,endian="big") > > which I can open using readBin(): > > readBin("desktop/temp.bip","integer",size=2,endian="big",n=20) > > Now I want to open select values from the binary file, not a complete line. > Say I want to read values 3, 7, and 10, process them, write the result, and > then read values 4, 5, and 17. How do I direct readBin to those specific > values? Thanks.
You need to seek help. Or help(seek). Yes really. Barry -- blog: http://geospaced.blogspot.com/ web: http://www.maths.lancs.ac.uk/~rowlings web: http://www.rowlingson.com/ twitter: http://twitter.com/geospacedman pics: http://www.flickr.com/photos/spacedman _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo