Re: Map required

2014-08-26 Thread Tony Finch
Frank King frank.k...@cl.cam.ac.uk wrote: To be sure the projection distorts sizes so Greenland appears about the same size as Africa but the UK is pretty small and the distortion is minimal. I do not understand Linda's map! As John Foad didn't quite say, this is decidedly an Alex Salmond

Re: Map required

2014-08-20 Thread Frank King
Dear Geoff, Given that you have checked the Ordnance Survey's A guide to coordinate systems in Great Britain you will know everything that I know on this and, no doubt, much more besides. What I didn't quite deduce from the document is how individual features get into the grid squares! You

RE: Map required

2014-08-18 Thread Geoffrey Thurston
that these basic facts were still true. What should I now believe? Geoff -Original Message- From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Keith Christian Sent: 17 August 2014 19:01 To: sundial@uni-koeln.de Subject: Re: Map required As Frank King mentioned

Re: Map required

2014-08-18 Thread Frank King
Dear Geoff, I share your lament... I thought that I understood the principles of the OSGB but since Keith said that it is not strictly based on a transverse Mercator projection, I am now confused again. Well, the Ordnance Survey certainly WAS based on a transverse Mercator projection, and

RE: Map required

2014-08-18 Thread Geoffrey Thurston
@uni-koeln.de; Frank King Subject: Re: Map required Dear Geoff, I share your lament... I thought that I understood the principles of the OSGB but since Keith said that it is not strictly based on a transverse Mercator projection, I am now confused again. Well, the Ordnance Survey certainly

Re: Map required

2014-08-17 Thread Thibaud Taudin Chabot
is http://www.mapmaker.com/v3/index.htm a possible solution for you? Thibaud At 20:14 16-8-2014, Tony Moss wrote: Hi all, For a sundialling purpose I need a map of the British Isles in Mercator's Projection. All I have found so far is a webpage purporting to offer a Mercator print

Re: Re Map required

2014-08-17 Thread Linda Reid
In message 53f0418a.9060...@zooplankton.co.uk Frank Evans frankev...@zooplankton.co.uk wrote: Hi Tony, Do you need a place map or just one where you can enter lat.-long.? If the latter you just need a chart. Maybe Lilley and Gillie, chart agents, in North Shields can help. Best,

Re: Re Map required

2014-08-17 Thread John Foad
Hi Tony, Looking at Linda's map, are you rooting for Scottish independence?! Best wishes, John -Original Message- From: Linda Reid Sent: Sunday, August 17, 2014 10:13 AM To: sundial@uni-koeln.de Subject: Re: Re Map required In message 53f0418a.9060...@zooplankton.co.uk

Re: Re Map required

2014-08-17 Thread David Andersson
: Sunday, August 17, 2014 10:13 AM To: sundial@uni-koeln.de Subject: Re: Re Map required In message 53f0418a.9060...@zooplankton.co.uk Frank Evans frankev...@zooplankton.co.uk wrote: Hi Tony, Do you need a place map or just one where you can enter lat.-long.? If the latter you

Re: Map required

2014-08-17 Thread Tony Moss
12:18 Subject: Re: Re Map required In message 0140891B818E4FDEAEFAD2DD82D8EF4F@FoadPC John Foad john.f...@keme.co.uk wrote: Hi Tony, Looking at Linda's map, are you rooting for Scottish independence?! Best wishes, John Yes, the Mercator projection distorts areas

Re: Map required

2014-08-17 Thread Frank King
Dear Tony, What a fun thread you have spawned! Mercator is possibly the most famous Belgian, not that Belgium existed in his day but let's overlook that detail. The mathematics of Mercator's projection is quite challenging. Certainly Mercator himself didn't understand it! The first proper

Re: Map required

2014-08-17 Thread Keith Christian
In message e1xj1zw-0004rj...@mta1.cl.cam.ac.uk Frank King frank.k...@cl.cam.ac.uk wrote: Dear Tony, What a fun thread you have spawned! Mercator is possibly the most famous Belgian, not that Belgium existed in his day but let's overlook that detail. The mathematics of

Re: Map required

2014-08-17 Thread Tony Moss
To: sundial@uni-koeln.de Sent: Sun, 17 Aug 2014 19:10 Subject: Re: Map required In message e1xj1zw-0004rj...@mta1.cl.cam.ac.uk Frank King frank.k...@cl.cam.ac.uk wrote: Dear Tony, What a fun thread you have spawned! Mercator is possibly the most famous Belgian, not that Belgium

Re: Map required

2014-08-17 Thread koolish
A simple rectangular projection where Longitude is the X coordinate and Latitude is the Y coordinate also has straight and perpendicular lines. And it can go all the way to 90 North. Of course, longitude is very distorted at the poles. http://en.wikipedia.org/wiki/Equirectangular_projection

Map required

2014-08-16 Thread Tony Moss
Hi all, For a sundialling purpose I need a map of the British Isles in Mercator's Projection. All I have found so far is a webpage purporting to offer a Mercator print but its latitude lines are curved and the longitude lines converge to the north. My old schoolroom World Map has the

Re Map required

2014-08-16 Thread Frank Evans
Hi Tony, Do you need a place map or just one where you can enter lat.-long.? If the latter you just need a chart. Maybe Lilley and Gillie, chart agents, in North Shields can help. Best, Frank 55N 1W On 16 Aug 2014, at 19:14, Tony Moss tonylindi...@talktalk.net