2009/11/2 Mark Steward <[email protected]>: > Google Maps just uses a Spherical Mercator projection. That .png looks like > the National Grid (which is a TM projection). Do you have a link to the > original SVG?
I imagine you're right about the National Grid, given that according to the Wikipedia page is "ultimately based on data from the Boundary Commission". Let's say it is... where would I start looking in order to work out how to transform a projection from TM to STM? Thanks, Seb > -------------------------------------------------- > From: "Timothy Green" <[email protected]> > Sent: Monday, November 02, 2009 11:27 PM > To: <[email protected]>; "mySociety public, general purpose discussion > list" <[email protected]> > Subject: Re: [mySociety:public] question for the geogurus > >> Google maps is apparently UTM (which looks like a complete mess to >> tranform) and having a look around wikimedia has revealed nothing useful >> about the projection of the election map we have. Hrm. >> >> -t >> >> Seb Bacon wrote: >>> >>> Hi, >>> >>> I'm trying to fit the Wikipedia UK election map SVG over the top of >>> the Google Maps UK outline: >>> >>> >>> >>> http://maps.google.co.uk/maps?q=http:%2F%2Fwww.democracyclub.org.uk%2Fmedia%2Fall-uk.kml >>> >>> It doesn't fit. I'm hoping this is some well-known issue around >>> different projections which I can solve with a transform of some kind. >>> I'm hoping the answer *isn't* "those maps are just differently >>> inaccurate". >>> >>> Cheers >>> >>> Seb >>> >>> >> >> >> _______________________________________________ >> Mailing list [email protected] >> Archive, settings, or unsubscribe: >> >> https://secure.mysociety.org/admin/lists/mailman/listinfo/developers-public >> > > _______________________________________________ > Mailing list [email protected] > Archive, settings, or unsubscribe: > https://secure.mysociety.org/admin/lists/mailman/listinfo/developers-public > -- skype: seb.bacon mobile: 07790 939224 _______________________________________________ Mailing list [email protected] Archive, settings, or unsubscribe: https://secure.mysociety.org/admin/lists/mailman/listinfo/developers-public
