[R] R save very huge matrices in files

[Prof Brian Ripley]

Please read the `R Data Import/Export Manual' and the help page for 
write.table.

Is this really rw1061, that is R 1.6.1?  If so you need to upgrade, as 
write.table is _very_ much more efficient in recent versions.

On Thu, 3 Nov 2005 moritz.marienfeld at arcor.de wrote:

>
> I have to work with really huge matrices (about 1000*1000 or more). And I want to save those matrices in some file on my computer.
> I tried to do so by using the command
>
> write.tabe(SMatrix,file="C:/Programme/rw1061/SMatrix.txt",sep=" ",quote=FALSE,row.names=FALSE,col.names=FALSE)
>
> SMatrix is the matrix I want as a file.
>
> Unfortunately this does not work. Error message:
>
> Error: cannot allocate vector of size 32665 Kb
> In addition: Warning message:
> Reached total allocation of 255Mb: see help(memory.size)
>
> Is there any command, which could help? What can I to in order to save SMatrix?
>
> Moritz Marienfeld
>
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-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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