Re: [R] loading only parts of RData files?

From: Christian Schulz <chschulz_at_email.de>
Date: Tue, 03 May 2011 19:21:09 +0200

Hi,

g.data is perhaps a interesting package for you.

HTH,
Christian

> Dear List members,
>
>
> I would like to load R objects saved as RData file but ran into the problem that these objects are too large for my RAM ('Can not allocate vactor of size XX...'). Switching to a Linux machine is no option, neither is raising the memory limit.
>
> I am now wondering whether it is possible to load only specific single objects saved in these *.RData files into the workspace. As these objects usually are multidimensional arrays, ideally I would be able to load only specific dimensions of these arrays. IS there any possibility to do such in R?
>
> I know that NCDF files (and the RNetCDF package) provides possibilities to only read specific parts of the data into the memory, but I switching to this format would involve a lot of hassle so I would prefer to stay with something as convenient as save() and load() without switching to non R file formats.
>
>
> Thanks for any suggestions
> Jannis
>
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