[R] How to expand the size limit of a vector?

Prof Brian Ripley ripley at stats.ox.ac.uk
Fri Nov 26 08:50:09 CET 2004

On Fri, 26 Nov 2004, Guoqi Qian wrote:

> Hi everybody on this list,
> Could somebody please tell me how to expand the size limit of a vector
> in R?

You must be using Windows, without telling us. The rw-FAQ tells you the 
answer, as well as the help page that message refers to.  It's better for 
you that you learn to use these resources than ask 2000 people to read 
them for you.

You may also need to get a bigger computer, since you are trying to create 
a single object bigger than your computer's RAM memory and a high 
proportion of the address space of a Windows machine.  It might be more 
sensible to ask your more senior colleagues for advice on your statistical 
computing and see if you can avoid this computation.

> In my simulation I get the following error message:
>> x=kronecker(diag(1,100),matrix(1,100,100))
> Error: cannot allocate vector of size 781250 Kb
> In addition: Warning message:
> Reached total allocation of 511Mb: see help(memory.size)

> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html

which asks you to read the rw-FAQ before posting.

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)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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