I was hoping I could get some help with an import question. I work with remote sensing imagery which commonly comes in binary form in various interleaving formats (byte interleaved by line, by pixel, etc..). These files are 2d spatial x B bands in size, and I want to be able to extract the band values from various pixels (so each line of data into R would be one pixel x B bands).
What's the easiest way of importing this type of data? These files are often massive (4 - 16gb), so is there a way of having R read the lines of the data as I am running the process, rather than trying to load the whole image into memory at once? Thanks! For those of you with remote sensing experience, I'm using RSI's ENVI package.
--j
See ?connections which points you to many other function that help you to deal with reading in single values / blocks of values from a file.
Uwe ligges
______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
