Read the message at the bottom of every message from rhelp. -- David.
On Dec 31, 2014, at 8:09 PM, Zaid Bhatti wrote: > How can I unsubscribe to not receive loop e mails? > > Sent from my Huawei Mobile > > David Winsemius <dwinsem...@comcast.net> wrote: > > > On Dec 31, 2014, at 3:24 PM, Mike Miller wrote: > >> This is probably a FAQ, and I don't really have a question about it, but I >> just ran across this in something I was working on: >> >>> as.integer(1000*1.003) >> [1] 1002 >> >> I didn't expect it, but maybe I should have. I guess it's about the machine >> precision added to the fact that as.integer always rounds down: >> >> >>> as.integer(1000*1.003 + 255 * .Machine$double.eps) >> [1] 1002 >> >>> as.integer(1000*1.003 + 256 * .Machine$double.eps) >> [1] 1003 >> >> >> This does it right... >> >>> as.integer( round( 1000*1.003 ) ) >> [1] 1003 >> >> ...but this seems to always give the same answer and it is a little faster >> in my application: >> >>> as.integer( 1000*1.003 + .1 ) >> [1] 1003 >> >> >> FYI - I'm reading in a long vector of numbers from a text file with no more >> than three digits to the right of the decimal. I'm converting them to >> integers and saving them in binary format. >> > > So just add 0.0001 or even .0000001 to all of them and coerce to integer. > > >> Best, >> Mike >> >> ______________________________________________ >> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >> 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. > > David Winsemius > Alameda, CA, USA > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. > > ________________________________ > > This e-mail may contain information that is privileged or confidential. If > you are not the intended recipient, please delete the e-mail and any > attachments and notify us immediately. David Winsemius Alameda, CA, USA ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
