[Rd] Vector binding on harddisk

Paul Gilbert pgilbert at bank-banque-canada.ca
Thu Feb 14 16:14:05 CET 2008

_ wrote:
> Hi all,
> Using big vectors (more than 4GB) is unfortunately not possible under 
> Windows or other OS's if not enough RAM exists.

This is NOT true. It is not limited by RAM, but rather by RAM and swap 
space.  With 500G hard disks at about $100, the more serious limitation 
is a 32bit OS.  Speed is a different consideration, but I doubt that 
taking over what the OS is suppose to do will be the real answer.


> Could it be possible to implement an a new data type in R, like a 
> vector, but instead holding the information in memory, the data lies on 
> an file. If data is accessed, the data type vector get the information 
> automatically from the file.
> There is a package out there (named ff) but the accessed boundary have 
> to be declared by the user this is a disadvantage.
> Greetings.
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel

La version française suit le texte anglais.


This email may contain privileged and/or confidential information, and the Bank of
Canada does not waive any related rights. Any distribution, use, or copying of this
email or the information it contains by other than the intended recipient is
unauthorized. If you received this email in error please delete it immediately from
your system and notify the sender promptly by email that you have done so. 


Le présent courriel peut contenir de l'information privilégiée ou confidentielle.
La Banque du Canada ne renonce pas aux droits qui s'y rapportent. Toute diffusion,
utilisation ou copie de ce courriel ou des renseignements qu'il contient par une
personne autre que le ou les destinataires désignés est interdite. Si vous recevez
ce courriel par erreur, veuillez le supprimer immédiatement et envoyer sans délai à
l'expéditeur un message électronique pour l'aviser que vous avez éliminé de votre
ordinateur toute copie du courriel reçu.

More information about the R-devel mailing list