Dear Karl, This is hard to investigate without a reproducible example.
Best regards, ir. Thierry Onkelinx Instituut voor natuur- en bosonderzoek / Research Institute for Nature and Forest team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance Kliniekstraat 25 1070 Anderlecht Belgium To call in the statistician after the experiment is done may be no more than asking him to perform a post-mortem examination: he may be able to say what the experiment died of. ~ Sir Ronald Aylmer Fisher The plural of anecdote is not data. ~ Roger Brinner The combination of some data and an aching desire for an answer does not ensure that a reasonable answer can be extracted from a given body of data. ~ John Tukey 2017-03-17 16:05 GMT+01:00 Karl Schilling <karl.schill...@uni-bonn.de>: > Dear all: > > I have two data.frames A and B of the same number of rows (about 40,000). I > realized that when I copy column x from data.frame A to B, the order of this > column gets changed. This seems to affect only values in rownumbers > ~ > 35/36,000. It also happens in any of the following three approaches: > > A$x <- B$x > > x <- B$x (here, x is still in the correct order) > B$x <- x : now x is reordered > > B <- cbind(A, B$x) > > I am working with Windows7Pro/64bit, R 3.3.3, and RStudio 0.99.903. > > Any help would be appreciated. > > Best regards > > Karl Schilling > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
