I am returning a matrix from a function Samples<-DoMCMC(InitialVactor, CovarianceMatrix, ObservationData, NumCycles, Burnin, Thin)
When I have one R session open the program works, Samples is a matrix of samples from the MCMC When I have two R sessions open, it runs to completion, but when I got to view Samples, it is not there. by disappear, I mean I define Samples as above, and when it finishes cycling through I type Samples and it says it doesn't exist, I type the command: ls() and it is not in the list of objects defined in the session. How would something I am doing in the code be affected by how many R sessions are open? I have tried this on two different machines, one running Windows XP and one Windows 7. but both running R 2.13.1 Thank you all for all of the responses, sorry if my inexperience in R is hindering this process On Fri, Nov 25, 2011 at 4:06 PM, jim holtman <jholt...@gmail.com> wrote: > One thing is to define "missing" a little better. For example, as > mentioned previously, are you returning the values from a function > call? If you, print out an indication that they exist at that point. > If there is further processing happening, put some checks as to their > existance as the code continues. Can you localize where this is > happening? If they are "disappearing", then there is something you > are doing in your code to most likely make it happen. Until there is > something that people can reproduce, there are all types of theories > we can expound on. > > If I was looking at the code, I could probably put checks in at > various points to see in what section these things disappeared. Do > you have some 'try' functions around parts of the code that might not > be reporting some error conditions? So probably until you can provide > something that we can at least look at, and exactly how you determined > that something disappeared, there is probably not much more we can do > at this point. > > On Fri, Nov 25, 2011 at 6:19 PM, Duncan Murdoch > <murdoch.dun...@gmail.com> wrote: > > On 11-11-25 1:03 PM, Michael Clawson wrote: > >> > >> My problem with providing the code, is MCMC is a fairly integrated > >> process, > >> so I dont know how I would pare it down to send... > >> Would it work to send the MCMC code, and the three *.csv files to go > along > >> with it? > > > > I don't understand. If you can't make your code simple enough to post, > how > > do you think we can possibly imagine what you're doing? > > > > Duncan Murdoch > > > >> > >> On Fri, Nov 25, 2011 at 9:54 AM, David > >> Winsemius<dwinsem...@comcast.net>wrote: > >> > >>> > >>> On Nov 25, 2011, at 10:08 AM, Michael Clawson wrote: > >>> > >>> Uwe, > >>>> > >>>> by window I mean instances, by runs I mean, runs the my Markov-Chain > >>>> Monte > >>>> Carlo simulator > >>>> > >>> > >>> It would probably be better to adopt the terminology that the things > you > >>> are calling "windows" are "sessions". > >>> > >>> > >>>> I open two instances of R, run a million cycle chain in each instance, > >>>> and > >>>> when they finish, neither window has the object I defined to store the > >>>> runs. > >>>> > >>>> I tested this morning and when I open two R windows and run a 5k cycle > >>>> chain in each instance, neither window has the object I defined to > store > >>>> the runs. > >>>> > >>>> This does not happen when I only have one instance of R open > >>>> > >>> > >>> The most common cause of that behavior is failing to assign the output > of > >>> a function to a name. There is an object named ".Last.value" that hosld > >>> the > >>> results of the last returned object even it it doesn't have another > name. > >>> > >>> lapply(1:10, I) > >>> test<- .Last.value > >>> test > >>> [[1]] > >>> [1] 1 > >>> > >>> [[2]] > >>> [1] 2 > >>> snipped rest of output > >>> > >>> But as Uwe said ... without the code, ... and your OS (to answer the > >>> question about memory) .... and your sessionInfo() to make sure that > >>> this > >>> is not a GUI-related issue ... we cannot say very much. > >>> > >>> > >>> > >>> > >>>> 2011/11/25 Uwe > >>>> Ligges<lig...@statistik.tu-dortmund.**de< > lig...@statistik.tu-dortmund.de> > >>>>> > >>>> > >>>> > >>>>> > >>>>> On 25.11.2011 05:12, Aldo wrote: > >>>>> > >>>>> Is there a maximum memory allocation for all R windows open? because > >>>>> it > >>>>>> > >>>>>> is > >>>>>> like 1-3 million runs > >>>>>> > >>>>>> > >>>>> ???? > >>>>> So you mean you open a million windows at the same time? In that case > >>>>> we > >>>>> really need your definition of "window". > >>>>> > >>>>> > >>>>> .... so... it may be reaching some sort of memory limit > >>>>> > >>>>>> > >>>>>> > >>>>> I do not know if any OS / window manager has the capability to open > >>>>> that > >>>>> many numbers of windows. But as I said, we need some difintions and > >>>>> examples. > >>>>> > >>>>> Uwe Ligges > >>>>> > >>>>> -- > >>>>> > >>>> > >>> David Winsemius, MD > >>> West Hartford, CT > >>> > >>> > >> > >> [[alternative HTML version deleted]] > >> > >> ______________________________________________ > >> 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. > > > > ______________________________________________ > > 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. > > > > > > -- > Jim Holtman > Data Munger Guru > > What is the problem that you are trying to solve? > Tell me what you want to do, not how you want to do it. > [[alternative HTML version deleted]] ______________________________________________ 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.
