On 11/04/2011 1:10 PM, William Dunlap wrote:
If x has an S3 class then sort.int(x) returns a value without an S3 class but which has the is.object flag set, which, I think, causes identical() give a false/misleading report:
Fixed in R-devel as of r55409. Duncan Murdoch
> x<- structure(1:3, class="unrecognizedClass") > y<- sort.int(x) > t<- 1:3 > identical(y, t) # expect TRUE [1] FALSE > identical(as.vector(y), as.vector(t)) # expect TRUE [1] FALSE > dput(y) 1:3 > dput(t) 1:3 > class(y) [1] "integer" > class(t) [1] "integer" > is.object(y) [1] TRUE > is.object(t) [1] FALSE The files made by save(t, file="t.Rdata", compress=FALSE) save(y, file="y.Rdata", compress=FALSE) differ in 2 places, where the first is presumably the name of the object: % cmp -l y.Rdata t.Rdata 36 171 164 39 1 0 (The problem persists after a save/load cycle.) This is on R 2.12.2 on Linux. Sorry, I don't have 2.13.0 yet installed. Bill Dunlap Spotfire, TIBCO Software wdunlap tibco.com ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
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