Hi Luke, hi all, You have been right guys, the hashing solved the problem. Thanks for your hard efforts. :)
Best regards Benjamin -----Ursprüngliche Nachricht----- Von: Luke Tierney [mailto:[EMAIL PROTECTED] Gesendet: Friday, August 15, 2008 6:29 PM An: Prof Brian Ripley Cc: Benjamin Otto; R-Help Betreff: Re: [R] Saving environment object On Fri, 15 Aug 2008, Prof Brian Ripley wrote: > Having been told that this was a particular very large environment, Luke's > comments in serialize.c wouild seem to apply: > > The output format for dotted pairs writes the ATTRIB value first > rather than last. This allows CDR's to be processed by iterative > tail calls to avoid recursion stack overflows when processing long > lists. The writing code does take advantage of this, but the > reading code does not. It hasn't been a big issue so far--the only > case where it has come up is in saving a large unhashed environment > where saving succeeds but loading fails because the PROTECT stack > overflows. With the ability to create hashed environments at the > user level this is likely to be even less of an issue now. But if > we do need to deal with it we can do so without a change in the > serialization format--just rewrite ReadItem to pass the place to > store the CDR it reads. (It's a bit of a pain to do, that is why it > is being deferred until it is clearly needed.) Thanks -- I had forgotten about that (and would still prefer to defer rewriting ReadItem :-)) luke > So I think the moral is to hash large environments, and increasing > --max-ppsize should enable this one to be read in. > > On Fri, 15 Aug 2008, Luke Tierney wrote: > >> On Fri, 15 Aug 2008, Benjamin Otto wrote: >> >>> Hi, >>> >>> When I create an environment object with new.env() and populate it with >>> values then how can I save it into an .RData file properly, so it can be >>> loaded later on in a new session? >>> >>> Saving an environment object with save() or save.image() results in an >>> error >>> message when loading again: >>> >>> Error: protect(): protection stack overflow >> >> save/load works fine (and is used in many places): >> >>> e<-new.env() >>> assign("e", e, envir = e) >>> assign("x", 2, envir = e) >>> save(e, file = "test.Rda") >>> rm(e) >>> load("test.Rda") >>> e >> <environment: 0x1c2c748> >> >> There may be something about the values you are using that is causing >> problems, but there is no way to tell without a reproducible example. >> >> luke >> >>> >>> Regards, >>> >>> benjamin >>> >>> ====================================== >>> Benjamin Otto >>> University Hospital Hamburg-Eppendorf >>> Institute For Clinical Chemistry >>> Martinistr. 52 >>> D-20246 Hamburg >>> >>> Tel.: +49 40 42803 1908 >>> Fax.: +49 40 42803 4971 >>> ====================================== >>> >>> >>> >>> >> >> -- >> Luke Tierney >> Chair, Statistics and Actuarial Science >> Ralph E. Wareham Professor of Mathematical Sciences >> University of Iowa Phone: 319-335-3386 >> Department of Statistics and Fax: 319-335-3017 >> Actuarial Science >> 241 Schaeffer Hall email: [EMAIL PROTECTED] >> Iowa City, IA 52242 WWW: http://www.stat.uiowa.edu >> >> ______________________________________________ >> R-help@r-project.org 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. >> > > -- Luke Tierney Chair, Statistics and Actuarial Science Ralph E. Wareham Professor of Mathematical Sciences University of Iowa Phone: 319-335-3386 Department of Statistics and Fax: 319-335-3017 Actuarial Science 241 Schaeffer Hall email: [EMAIL PROTECTED] Iowa City, IA 52242 WWW: http://www.stat.uiowa.edu -- Pflichtangaben gemäß Gesetz über elektronische Handelsregister und Genossenschaftsregister sowie das Unternehmensregister (EHUG): Universitätsklinikum Hamburg-Eppendorf Körperschaft des öffentlichen Rechts Gerichtsstand: Hamburg Vorstandsmitglieder: Prof. Dr. Jörg F. Debatin (Vorsitzender) Dr. Alexander Kirstein Ricarda Klein Prof. Dr. Dr. Uwe Koch-Gromus ______________________________________________ R-help@r-project.org 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.
