[Talk-GB] OS National Grid References

Tom Hughes tom at compton.nu
Tue Jan 22 17:10:17 UTC 2019


On 22/01/2019 16:20, Brian Prangle wrote:

> Are these covered by copyright? I've found conflicting opinions:

The issue is not a grid ref itself as such, but the data tables
that are necessary to do a fully accurate conversion between OSGB
and WG84 (or any other coordinate system).

There is a simplified algorithmic transformation but a fully
accurate conversion requires the OSTN02 data.

I'm not sure what the current status is but they certainly used
to claim various IP rights over it.

Tom

-- 
Tom Hughes (tom at compton.nu)
http://compton.nu/



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