On 11/23/06, Antonio, Fabio Di Narzo <[EMAIL PROTECTED]> wrote: > 2006/11/23, Prof Brian Ripley <[EMAIL PROTECTED]>: > > On Thu, 23 Nov 2006, Antonio, Fabio Di Narzo wrote: > > > > > Dear all, > > > I'm indirectly faced with the fact that setting the 'tsp' attribute of > > > an object modifies its class definition: > > >> class( structure(1:2, tsp=c(1,2,1), class=c("myts","ts")) ) > > > [1] "ts" "myts" > > > > > > In general, this is of really little (ok, I admit: totally no) > > > interest for me because 'myts' class is added just after assigning the > > > 'tsp' attribute (by calling ts). > > > However, this behaviour gives me troubles when re-loading a previously > > > deparsed object, so that: > > >> x <- ts(1:2) > > >> class(x) <- c("myts", class(x)) > > >> dput( x , "temp.dat") > > >> class(dget("temp.dat")) > > > [1] "ts" "myts" > > >> unlink("temp.dat") > > > > > > In other words, my real problem should be restated as: how to safely > > > dump (and then load) an object which has a (perhaps valid) "tsp" > > > attribute? > > > More generally: can someone suggest me a safer way to dump/restoring R > > > objects? > > > > save/load. > > Ok. That seems to be the final statement: to be sure about the result, > I have to use binary files for storing R objects (even pure data > objects with attached attributes) instead of dumped R code.
If its mainly ascii you are after but the source file part is not important then note that save can save to ascii files: y <- x save("x", file = "temp.rda", ascii = TRUE) rm(x) load("temp.rda") identical(x, y) readLines("temp.rda") unlink("temp.rda") > I will accept that (infact, as I can read in 'save' help page, those > binaries should be portable across R platforms) and avoid boring you > anymore :-) > > > > > ?dput comes with copious warnings about the problems of doing what you are > > attempting, so I wonder why you are surprised. > > I've seen. That's because I've asked for suggestions, and not called > this a 'bug' or a 'nonsense' behaviour. > > > > > -- > > Brian D. Ripley, [EMAIL PROTECTED] > > Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ > > University of Oxford, Tel: +44 1865 272861 (self) > > 1 South Parks Road, +44 1865 272866 (PA) > > Oxford OX1 3TG, UK Fax: +44 1865 272595 > > > > > -- > Antonio, Fabio Di Narzo > Ph.D. student at > Department of Statistical Sciences > University of Bologna, Italy > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > 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@stat.math.ethz.ch mailing list 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.