9 Mar
2007
9 Mar
'07
2:09 p.m.
On Fri 09 Mar 2007, Dominic Hargreaves dom@earth.li wrote:
Could you be more specific about the OS reference implementation?
(Lots) more info here; download the zip file for a PDF and the datafiles: http://www.ordnancesurvey.co.uk/oswebsite/gps/osnetfreeservices/furtherinfo/...
Online converter here: http://gps.ordnancesurvey.co.uk/etrs89geo_natgrid.asp
As I understood it the Helmert transform we're currently using is more than accurate enough for the OpenGuides application.
It will do, yes. I was mainly concerned about the RDF output, i.e. other people using our geodata for their own purposes, but I don't know if anyone actually _is_, so there's probably no point in putting in effort for extra accuracy at this point.
Kake