Re: [R] simulation study using R

From: jim holtman <jholtman_at_gmail.com>
Date: Tue, 04 Mar 2008 07:40:13 -0500

One of the things you might take a look at is the 'filehash' package. It is an easy way of storing/retrieving R objects. I have an application where my objects are matrices of about the same size and I can quickly store the data and then come back later with a different script to do further analysis.

On 3/3/08, Davood Tofighi <dtofighi_at_asu.edu> wrote:
> Thanks for your reply. For each condition, I will have a matrix or data
> frames of 1000 rows and 4 columns. I also have a total of 64 conditions for
> now. So, in total, I will have 64 matrices or data frames of 1000 rows and 4
> columns. The format of data I would like to store would be data frames or
> matrices. I also would like to store the data for later use, e.g., a plot of
> the empirical distribution of the chi^2, or to compute the power of Chi^2
> across 1000 reps for each condition.
>
> On Mon, Mar 3, 2008 at 7:03 PM, jim holtman <jholtman_at_gmail.com> wrote:
> > What is the format of the data you are storing (single value,
> > multivalued vector, matrix, dataframe, ...)? This will help formulate
> > a solution. What do you plan to do with the data? Are you going to
> > do further analysis, write it to flat files, store it in a data base,
> > etc.? How big are the data objects you are manipulating?
> >
> >
> >
> >
> > On Mon, Mar 3, 2008 at 7:05 PM, Davood Tofighi <dtofighi_at_asu.edu> wrote:
> > > Dear All,
> > >
> > > I am running a Monte Carlo simulation study and have some questions on
> how
> > > to manage data storage efficiently at the end of each 1000 replication
> loop.
> > > I have three conditions coded using the FOR {} loops and a FOR loop that
> > > generates data for each condition, performs analysis, and computes a
> > > statistic 1000 times. Therefore, for each condition, I will have 1000
> > > statistic values. My question is what's the best way to store the 1000
> > > statistic for each condition. Any suggestion on how to manage such
> > > simulation studies is greatly appreciated.
> > > Thanks,
> > >
> > > --
> > > Davood Tofighi
> > > Department of Psychology
> > > Arizona State University
> > >
> > > [[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.
> > >
> >
> >
> >
> > --
> > Jim Holtman
> > Cincinnati, OH
> > +1 513 646 9390
> >
> > What is the problem you are trying to solve?
> >
>
>
>
> --
> Davood Tofighi
> Department of Psychology
> Arizona State University
> P.O. BOX 871104
> Tempe, AZ 85287-1104
> Tel.:480-727-7884

-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?

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Received on Tue 04 Mar 2008 - 12:48:10 GMT

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