At Thu, 27 Dec 2012 15:38:08 -0500, Sam Steingold wrote: > so, > 1. is there a way for a function to modify a global variable?
Use <<- instead of <-. > 2. how would you vectorize this loop? This is hard. Your function has a feedback loop: an iteration depends on the previous iteration's result. A for loop is about as good as you can do in this case. sapply might help a bit, but it is really just a for loop in disguise. Since sample.int is used to generate indexes, you might try to generate a bunch of indexes, take as many as don't overlap (i.e., collect all orthogonal updates) and do all of those updates at once. If you really need the entropy after every iteration, however, then this won't work for you either. Neal ______________________________________________ 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.
