[Rd] largest acceptable lookup table in a package
ggrothendieck at gmail.com
Wed Jul 26 16:41:34 CEST 2006
A frame of reference based on:
is the quantiles of the size distribution of the compressed packages:
0% 5% 25% 50% 75% 95% 100%
58 5800 17000 62500 249500 1500000 15000000
On 7/26/06, Robin Hankin <r.hankin at noc.soton.ac.uk> wrote:
> One of my packages needs a look-up table of pre-calculated
> numbers in the data directory.
> I would like to have the matrix as large as possible.
> What is the largest size matrix that would be an acceptable datafile in
> an R package?
> The table is a square, upper triangular matrix
> consisting of logs of Stirling numbers calculated by Maple.
> As discussed on the List a few days ago (thanks again David!)
> Stirling numbers are computationally challenging;
> one needs exact integer arithmetic for very large
> integers for their calculation (a 100x100 table requires ~10^157)
> Robin Hankin
> Uncertainty Analyst
> National Oceanography Centre, Southampton
> European Way, Southampton SO14 3ZH, UK
> tel 023-8059-7743
> R-devel at r-project.org mailing list
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