Re: [Talk-GB] Generating Mapnik Images to epsg:27700 (British National Grid) Projection

2009-04-30 Thread Kev js1982
As a follow up to my earlier emails regarding this. I have finally got it working with thanks to Matt Amos (and everyone else who has replied). Basically there appear to be bugs* in Mapnik preventing it converting from Google projection to 27700 on the fly, coupled with some misunderstanding of

Re: [Talk-GB] Generating Mapnik Images to epsg:27700 (British National Grid) Projection

2009-04-24 Thread Tim Waters (chippy)
please correct me, I want to be wrong, I heard yesterday that by projecting any data into OSGB, the OS has copyright / dominion over it, since they own that coordinate system. ___ Talk-GB mailing list Talk-GB@openstreetmap.org

Re: [Talk-GB] Generating Mapnik Images to epsg:27700 (British National Grid) Projection

2009-04-24 Thread Thomas Wood
I'm fairly sure that the OSGB36 (36 being a year) transformations are fairly publicly known. The more detailed OSTN02 transformations are copyrighted (and very hard to get a hold of). There's a bit of info on what OSTN02 actually is here -

Re: [Talk-GB] Generating Mapnik Images to epsg:27700 (British National Grid) Projection

2009-04-24 Thread Matt Amos
On Thu, Apr 23, 2009 at 4:20 PM, Kev js1982 o...@kevswindells.eu wrote: depending on what the data is stored in - alas I have an issue where it isn't rendering tiles properly, looks to be memory related - those with really complex coastlines (North West Wales) are rendering in sea colour, and

Re: [Talk-GB] Generating Mapnik Images to epsg:27700 (British National Grid) Projection

2009-04-23 Thread Kev js1982
is going wrong too, but try this and see what happens. Ollie -Original Message- Date: Wed, 22 Apr 2009 10:19:05 +0100 From: Kev js1982 o...@kevswindells.eu Subject: [Talk-GB] Generating Mapnik Images to epsg:27700 (British NationalGrid) Projection To: talk-gb

[Talk-GB] Generating Mapnik Images to epsg:27700 (British National Grid) Projection

2009-04-22 Thread Kev js1982
Sorry if this is the wrong place to ask this (I can't find a better one). I am trying to generate some tiles to generate a set of tiles to cover the British Isles in the OSGB Projection (epsg:27700) The files I have use an quite possibly unique naming schema (we are intending to use them as a

Re: [Talk-GB] Generating Mapnik Images to epsg:27700 (British National Grid) Projection

2009-04-22 Thread Oliver O'Brien
: [Talk-GB] Generating Mapnik Images to epsg:27700 (British NationalGrid) Projection To: talk-gb@openstreetmap.org Message-ID: 96af97fa0904220219i6ab35e3awa779475fe0592...@mail.gmail.com Content-Type: text/plain; charset=iso-8859-1 Sorry if this is the wrong place to ask this (I

Re: [Talk-GB] Generating Mapnik Images to epsg:27700 (British National Grid) Projection

2009-04-22 Thread Andy Allan
js1982 o...@kevswindells.eu Subject: [Talk-GB] Generating Mapnik Images to epsg:27700 (British        National        Grid) Projection To: talk-gb@openstreetmap.org Message-ID:        96af97fa0904220219i6ab35e3awa779475fe0592...@mail.gmail.com Content-Type: text/plain; charset=iso-8859-1