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Retrieving samples when ussing BRugs.
4 messages · Thiago Guerrera, Sacha Epskamp, Uwe Ligges
If you obtain an output object with openbugs(), e.g.: samples <- openbugs( ... ) Then this is a list with all the parameters and samples. See names(samples). You can obtain the samples in a list with: samples[['sims.list']] Is this what you mean?
On Fri, Dec 9, 2011 at 2:00 PM, Thiago Guerrera <thigm85 at gmail.com> wrote:
Hello R users,
I have used the R package BRugs in some applications but one thing that
annoy me is the functions to retrieve samples ("samplesSample") or summary
statistics ("samplesStats"). They take a really long time to return the
values if the size of the chains in question is moderate, for example
10.000 samples. Does this happens with every one or there is a better way
to obtain such values?
Best
--
Thiago Guerrera.
? ? ? ?[[alternative HTML version deleted]]
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4 days later
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3 days later
On 14.12.2011 10:44, Thiago Guerrera wrote:
Hi Sacha,
I was referring to the BRugs package, where I usually proceed as follows:
result = BRugsFit (...)
param_samples = samplesSample("param") (1)
But (1) takes a long time for big chains. So my question was specific to
BRugs, if there an alternative way to get the samples.
Short answer: No. Long answer: Well, samplesHistory(..., plot=FALSE) may be more convenient for several parameters at once, but it uses samplesSample internally, that means: no. Best, Uwe Ligges
openbugs() mentioned by you seems to be from R2WinBUGS that I have never used. I'll try that. Thanks for the suggestion. Best, Thiago On Fri, Dec 9, 2011 at 4:34 PM, Sacha Epskamp<sacha.epskamp at gmail.com>wrote:
If you obtain an output object with openbugs(), e.g.: samples<- openbugs( ... ) Then this is a list with all the parameters and samples. See names(samples). You can obtain the samples in a list with: samples[['sims.list']] Is this what you mean? On Fri, Dec 9, 2011 at 2:00 PM, Thiago Guerrera<thigm85 at gmail.com> wrote:
Hello R users,
I have used the R package BRugs in some applications but one thing that
annoy me is the functions to retrieve samples ("samplesSample") or
summary
statistics ("samplesStats"). They take a really long time to return the
values if the size of the chains in question is moderate, for example
10.000 samples. Does this happens with every one or there is a better way
to obtain such values?
Best
--
Thiago Guerrera.
[[alternative HTML version deleted]]
______________________________________________ R-help at 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.