Use parentheses if you want to be sure, otherwise the help file for & and | says:
See Syntax for the precedence of these operators: unlike many other languages (including S) the AND and OR operators do not have the same precedence (the AND operators are higher than the OR operators). hth, Ingmar On 17 Jul 2007, at 08:59, Delphine Fontaine wrote: > Dear R-users, > > I havent found rules for logical operators. I need to select data > according > the following rule: > Condition A & (Condition B | Condition C) How should I write it ? Is > Condition A & Condition B | Condition C correct or will R execute > (Condition > A & Condition B) | Condition C ? > > Thanks for your help. > > Delphine Fontaine > > > > > > > Delphine Fontaine > Statistician > Statistics Department - Genexion SA > ------------------------------------------------------------ > 29, Quai du Mont-Blanc > Genva, CH-1201 > Switzerland > ------------------------------------------------------------ > Office: +41 22 704 32 44 > Fax: +41 22 704 32 42 > Email: [EMAIL PROTECTED] > > ______________________________________________ > [email protected] 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. Ingmar Visser Department of Psychology, University of Amsterdam Roetersstraat 15 1018 WB Amsterdam The Netherlands t: +31-20-5256735 [[alternative HTML version deleted]]
______________________________________________ [email protected] 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.
