At Tue, 1 Jan 2013 02:00:14 +0000, Muhuri, Pradip (SAMHSA/CBHSQ) wrote: > Although David's solution (putting the right parenthesis, which I had missed) > has resolved the issue, I would like to try yours as well. > > Could you please clarify the six elements: c(-1e-8, 0, 0, 0, 0, 1e8)?
It's a vector. Floating point numbers can't always store an exact representation. So, for instance, R evaluates ".1 == .3 / 3" as FALSE. If instead you had done: "abs(.1 - .3 / 3) < 1e-8", the result would be true. The latter does not check for strict equality, but whether the value is within some small delta of the target. Read chapter 1 of the R Inferno. Note, the last element of the vector should be 1e-8, not 1e8. 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.
