Aaargh... I should RTFM more closely. Thanks for pointing this out. On Fri, Feb 24, 2012 at 12:20 PM, Martin Maechler <maech...@stat.math.ethz.ch> wrote: >>>>>> Joris Meys <jorism...@gmail.com> >>>>>> on Fri, 24 Feb 2012 11:24:35 +0100 writes: > > > I ran into some very irritating behaviour I don't > > understand. Let me illustrate with the package gdata() > > and the function print.object_size() : > > >> print(object.size(iris),units='Kb') > > 6.3 Kb > >> getAnywhere(print.object_size) > > A single object matching ‘print.object_size’ was found It > > was found in the following places registered S3 method for > > print from namespace utils namespace:utils with value ... > > > All is well. So now I load gdata > > >> require(gdata) > > Loading required package: gdata ... The following > > object(s) are masked from ‘package:utils’: > > > object.size > > > OK, this is what I would expect: > > >> print(object.size(iris),units='Kb') > > [1] 6424 > >> getAnywhere(print.object_size) > > 2 differing objects matching ‘print.object_size’ were > > found in the following places registered S3 method for > > print from namespace utils namespace:gdata namespace:utils > > Use [] to view one of them > > > Now I detach gdata again > > >> detach(package:gdata) > > > But the function print.object_size is still the default > > for object_size objects! > > >> print(object.size(iris),units='Kb') > > [1] 6424 > > > And it can still be found as well: > > >> getAnywhere(print.object_size) > > 2 differing objects matching ‘print.object_size’ were > > found in the following places registered S3 method for > > print from namespace utils namespace:gdata namespace:utils > > Use [] to view one of them > > > Am I missing something? > > Yes: the argument 'unload' of detach(). > > In general: Now that every package has a namespace, > you (and others) should learn the difference between > attaching and loading - and hence detach()ing and unloading > a package with its namespace. > > ?detach > ?library > > etc should give a good start. > > Martin Maechler, ETH Zurich
-- Joris Meys Statistical consultant Ghent University Faculty of Bioscience Engineering Department of Mathematical Modelling, Statistics and Bio-Informatics tel : +32 9 264 59 87 joris.m...@ugent.be ------------------------------- Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
