There are at least two partial solutions to the question. length units are handled in the unit function in the grid package. ?grid:::unit
time units are handled in the lubridate package Garrett Grolemund, Hadley Wickham (2011). Dates and Times Made Easy with lubridate. Journal of Statistical Software, 40(3), 1-25. http://www.jstatsoft.org/v40/i03/. On Thu, Dec 8, 2011 at 10:57 AM, David Winsemius <dwinsem...@comcast.net>wrote: > > On Dec 8, 2011, at 9:22 AM, Stephen Eglen wrote: > > Has anyone got a neat way in R to handle scientific units along with >> numeric >> vectors? >> > > Not really. There is limited support for conversions as well. I have > wondered about this after addressing a similar question on Stack Overflow: > > http://stackoverflow.com/**questions/7214781/converting-** > units-in-r/7215430#7215430<http://stackoverflow.com/questions/7214781/converting-units-in-r/7215430#7215430> > > > e.g. in mathematica, there is a Units package to allow you to >> do the following: >> >> 85 Meter/Second * 10 Second >> >> answer: 850 Meter >> > > As a program that was originally design to symbolic algebra it is not > surprising to find such methods in Mathematica. I have looked around for > examples of implementations in other languages and have found them in LisP > and in PERL > > http://www.cs.utexas.edu/**users/novak/units.html<http://www.cs.utexas.edu/users/novak/units.html> > > http://search.cpan.org/~**klortho/Physics-Unit-0.04/lib/**Physics/Unit.pm<http://search.cpan.org/~klortho/Physics-Unit-0.04/lib/Physics/Unit.pm> > > > >> (taken from >> http://library.wolfram.com/**howtos/units/<http://library.wolfram.com/howtos/units/> >> ) >> > > -- > > David Winsemius, MD > West Hartford, CT > > > ______________________________**________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/**listinfo/r-help<https://stat.ethz.ch/mailman/listinfo/r-help> > PLEASE do read the posting guide http://www.R-project.org/** > posting-guide.html <http://www.r-project.org/posting-guide.html> > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ 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.
