[R] How to build a matrix of number of appearance?

[jim holtman]

Provide some more information about the size of the data and the
number of different ID combinations. I have found that in some cases
like this using the 'sqldf' package helps since it can deal with large
number of combinations.

On Tue, Jul 5, 2011 at 5:45 AM, UriB <uriblass at gmail.com> wrote:
> Thanks for your reply
> Note that I guess that there are many providerID and I get the error cannot
> allocate vector of size 2.1 Gb
> (I can use the same trick for most of the other fields)
>
> Is there a way to do the same only for providerID with relatively high
> frequency?
>
> --
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-- 
Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?