Hello! On R Version 2.2.1 (2005-12-20 r36812) and in SVN The following part of the example in ?order says ## For character vectors we can make use of rank: cy <- as.character(y) rbind(x,y,z)[, order(x, -rank(y), z)] But "cy" is not used in there. -- Lep pozdrav / With regards, Gregor Gorjanc ---------------------------------------------------------------------- University of Ljubljana PhD student Biotechnical Faculty Zootechnical Department URI: http://www.bfro.uni-lj.si/MR/ggorjan Groblje 3 mail: gregor.gorjanc <at> bfro.uni-lj.si SI-1230 Domzale tel: +386 (0)1 72 17 861 Slovenia, Europe fax: +386 (0)1 72 17 888 ---------------------------------------------------------------------- "One must learn by doing the thing; for though you think you know it, you have no certainty until you try." Sophocles ~ 450 B.C.