[Rd] largest acceptable lookup table in a package

From: Robin Hankin <r.hankin_at_noc.soton.ac.uk>
Date: Wed 26 Jul 2006 - 13:21:21 GMT


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

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Received on Wed Jul 26 23:25:14 2006

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