[R] Reformulated matrices dimensions limitation problem

[Petr Pikal]

Did you consider biglm  package. I did not use it myself but from its 
description it can be used for linear models on objects that do not 
fit into memory.

HTH
Petr


On 2 Mar 2007 at 13:12, Bruno C. wrote:

Date sent:      	Fri, 2 Mar 2007 13:12:07 +0100
From:           	"Bruno C." <bruno.c at inwind.it>
To:             	"petr.pikal" <petr.pikal at precheza.cz>
Copies to:      	r-help <r-help at r-project.org>
Subject:        	Re: [R] Reformulated  matrices dimensions limitation problem

> You are right. and I am aware of that.
> 
> This is what I need to do:
> load a regression model
> load the bigget posible matrix
> do prediction on this matrix
> 
> the first and 3rd step will not need to much memory... 
> 
> and I would really appreciate this degree of introspection from R: it
> would be great if there would be a package that could simulate the
> amount of memory needed from a process But I don't pretend that much,
> this is why I am asking only about  a function able to build a matrix
> matrix, with size based on memory available...
> 
> 
> 
> 
> > Hi
> > 
> > creating a biggest possible matrix does not automaticaly mean you
> > can do some computation with it. 
> > 
> > So the size will depend partly on what you want to do with it. I
> > presume that you do not want only to create a matrix just for
> > pleasure to be able to.
> > 
> > Cheers
> > Petr
> >  
> > 
> > On 2 Mar 2007 at 10:15, Bruno C. wrote:
> > 
> > Date sent:      	Fri, 2 Mar 2007 10:15:33 +0100
> > From:           	"Bruno C." <bruno.c at inwind.it>
> > To:             	"r-help" <r-help at r-project.org>
> > Subject:        	[R] Reformulated  matrices dimensions limitation
> > problem
> > 
> > > First I wanted to thank both Marc Schwartz Greg Snow and for their
> > > reply.
> > > 
> > > Then I needed to add a level of complexity to the problem.
> > > I would be able to create the biggest possible matrix.
> > > 
> > > In other way does it exist a method to ask smthing like the
> > > following :
> > > 
> > > max number of rows for a matrix if column=x?
> > > 
> > > Thank you
> > > 
> > > 
> > > 
> > > 
> > > 
> > > ------------------------------------------------------
> > > Passa a Infostrada. ADSL e Telefono senza limiti e senza canone
> > > Telecom http://click.libero.it/infostrada2marz07
> > > 
> > > ______________________________________________
> > > R-help at stat.math.ethz.ch 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.
> > 
> > Petr Pikal
> > petr.pikal at precheza.cz
> > 
> > 
> 
> 
> ------------------------------------------------------
> Passa a Infostrada. ADSL e Telefono senza limiti e senza canone
> Telecom http://click.libero.it/infostrada2marz07
> 
> ______________________________________________
> R-help at stat.math.ethz.ch 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.

Petr Pikal
petr.pikal at precheza.cz