Thanks to all who clarified this for me. The documentation is clear once I read it carefully.
Frank On Wed, 06 Aug 2003 16:41:23 -0500 Marc Schwartz <[EMAIL PROTECTED]> wrote: > On Wed, 2003-08-06 at 16:38, Marc Schwartz wrote: > > On Wed, 2003-08-06 at 16:21, Frank E Harrell Jr wrote: > > > In > > > > > > platform i686-pc-linux-gnu > > > arch i686 > > > os linux-gnu > > > system i686, linux-gnu > > > status > > > major 1 > > > minor 7.1 > > > year 2003 > > > month 06 > > > day 16 > > > language R > > > > > > I get > > > > > > > sort(c(3,1,NA)) > > > [1] 1 3 > > > > > > Shouldn't NAs be retained by default? > > > > > > Thanks -Frank > > > > > > Frank, > > > > The default is to exclude NA's based upon the argument 'na.last = NA'. > > If you set the argument 'na.last' to either TRUE or FALSE, the NA's will > > be kept and sorted either last or first respectively. > > > > > sort(c(3,1,NA), na.last = TRUE) > > [1] 1 3 NA > > > > > sort(c(3,1,NA), na.last = LAST) > > [1] NA 1 3 > > > > See ?sort > > > > HTH, > > > > Marc Schwartz > > > Apologies. Bad copy on my part. The second example should be: > > > sort(c(3,1,NA), na.last = FALSE) > [1] NA 1 3 > > Marc > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help --- Frank E Harrell Jr Prof. of Biostatistics & Statistics Div. of Biostatistics & Epidem. Dept. of Health Evaluation Sciences U. Virginia School of Medicine http://hesweb1.med.virginia.edu/biostat ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
