Hi! I might be a bit late, but maybe you meant: x[x>= -0.50 | x<= -1.0]
See ?"|" HTH, Ivan Le 8/29/2010 04:54, Joshua Wiley a écrit : > Dear Erin, > > -0.50 is greater than -1.00, this means that your logical test returns > all FALSE answers. Now consider the results of: > > x[FALSE] > > you are selecting none of 'x', hence numeric(0). > > Perhaps you mean: > > x[x<= -0.50& x>= -1.0] > > HTH, > > Josh > > On Sat, Aug 28, 2010 at 7:47 PM, Erin Hodgess<erinm.hodg...@gmail.com> wrote: >> Dear R People: >> >> I just produced the following: >> >> x<- seq(-3,3,.01) >> x[x>= -0.50& x<= -1.0] >> numeric(0) >> x[x>= -0.50&& x<= -1.0] >> numeric(0) >> >> What am I doing wrong, please? This seems strange. >> >> Thanks, >> Erin >> >> >> -- >> Erin Hodgess >> Associate Professor >> Department of Computer and Mathematical Sciences >> University of Houston - Downtown >> mailto: erinm.hodg...@gmail.com >> >> ______________________________________________ >> 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. >> > > -- Ivan CALANDRA PhD Student University of Hamburg Biozentrum Grindel und Zoologisches Museum Abt. Säugetiere Martin-Luther-King-Platz 3 D-20146 Hamburg, GERMANY +49(0)40 42838 6231 ivan.calan...@uni-hamburg.de ********** http://www.for771.uni-bonn.de http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php [[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.
