I've solved my problem using: (purpose: write the signed integer -19 as a two byte integer into a binary file)
writeBin(as.integer(-19),myconnection, size=2) There is no need to coerce. Thanks anyway! Luca NanettiUniversity Medical Center Groningen BCN-NeuroImagingCenter A.Deusinglaan 2 9713AW Groningen The Nethterlands l dot nanetti at med dot rug dot nl ______________________________________________ R-help@stat.math.ethz.ch 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.