[R] is this a bug? problem saving and restoring coxph objects
rdiazuri at students.wisc.edu
Sat Mar 25 16:22:41 CET 2000
Thank you very much to Thomas Lumley for the workarounds!
On Sat, 25 Mar 2000, you wrote:
> On Sat, 25 Mar 2000, Thomas Lumley wrote:
> > On Sat, 25 Mar 2000, Ramon Diaz-Uriarte wrote:
> > > I am using R 1.0.0 on Linux, and I am running into a problem with coxph objects
> > > (library survival5).
> > >
> > > If I fit a model that includes a frailty term with sparse=F (e.g
> > > my.model<-coxph(Surv(t,censor)~trt+frailty(id,sparse=F))),
> > >
> > > when I try to save all the objects (e.g., save.image()) I get the error:
> > >
> > > > save.image()
> > > Error in save(list = ls(all.names = TRUE), file = ".RData", oldstyle = FALSE) :
> > > NewWriteItem: unknown type 17
> > >
> > >
> > > This seems like a bug. Where should I report it? Is there a workaround?
> This is actually two different bugs in the save/load code.
> The first is that it cannot currently handle unevaluated ... argument.
> Either of the workarounds I posted previously will fix this by removing
> the unevaluated ... argument. This is what causes the 'unknown type 17'
> The second is that an error while saving a file leads to the file being
> improperly closed. If you later save another file with the same name
> there can be problems when R exits. This causes the problems you have
> after deleting the object. The workarounds will stop this by preventing
> the initial error.
> If for some other reason you have an error while saving a file you should
> a) delete the partially saved file
> and try again
> b) save the file with a different name
> and rename it after leaving R.
> mv .aDifferentName .RData
> Thomas Lumley
> Assistant Professor, Biostatistics
> University of Washington, Seattle
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