Re: [R] Coarsening the Resolution of a Dataset

From: Steve Murray <smurray444_at_hotmail.com>
Date: Wed, 30 Jul 2008 08:08:44 +0000

Hi - thanks for the advice - I am however applying this to the whole data frame. And the code that I'm using is just to read in the data (using read.table) and then the code that you supplied. I could send you the actual dataset if you don't mind a file ~50MB?!

Thanks again,

Steve

> Date: Tue, 29 Jul 2008 15:34:31 -0400
> From: jholtman_at_gmail.com
> To: smurray444_at_hotmail.com
> Subject: Re: [R] Coarsening the Resolution of a Dataset
> CC: r-help_at_r-project.org
>
> I assume that you are doing this on one column of the matrix which
> should only have 2160 entries in it. can you send the actual code you
> are using. I tried it with 10,000 samples and it works fine. So I
> need to understand the data structure you are using. Also the
> infinite recursion sounds strange; do you have function like 'cut' or
> 'c' redefined? So it would help if you could supply a reproducible
> example.
>
> On Tue, Jul 29, 2008 at 10:09 AM, Steve Murray <smurray444_at_hotmail.com> wrote:
> >
> > Unfortunately, when I get to the 'myCuts' line, I receive the following error:
> >
> > Error: evaluation nested too deeply: infinite recursion / options(expressions=)?
> >
> > ...and I also receive warnings about memory allocation being reached (even though I've already used memory.limit() to maximise the memory) - this is a fairly sizeable dataset afterall, 2160 rows by 4320 columns.
> >
> > Therefore I was wondering if there are any alternative ways of coarsening a dataset? Or are there any packages/commands built for this sort of thing?
> >
> > Any advice would be much appreciated!
> >
> > Thanks again,
> >
> > Steve
> >
> >
> > _________________________________________________________________
> > Find the best and worst places on the planet
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>
>
>
> --
> Jim Holtman
> Cincinnati, OH
> +1 513 646 9390
>
> What is the problem you are trying to solve?



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