On 30/10/2009 5:04 PM, Greg Michaelson wrote:
I would like to increase the precision/accuracy of R. That is, I'm dealing with numbers exceedingly close to 1, and I would like to increase the number of significant digits used in computation. In matlab, you can use vpa() to accomplish this. I'm wondering if there's an equivalent or a workaround in R.
There's a package for extra precision, but you'd probably be better off just working with log(x). That will give you about 300+ digits of precision near 1, i.e. log(1 + epsilon) is representable accurately down to epsilon=10^(-300).
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.
