Robert (Jamie) Munro wrote: >Sent: 25 March 2008 10:27 PM >To: Juan Lucas Dominguez Rubio >Cc: [email protected] >Subject: Re: [OSM-talk] JOSM and scale > >-----BEGIN PGP SIGNED MESSAGE----- >Hash: SHA1 > >Juan Lucas Dominguez Rubio wrote: >| > In Mercator distance is constant independent of orientation, isn't it? >| >| I don't know what you mean exactly. >| >| If you use JOSM with the Mercator projection and draw a perfect circle >| in the North of Sweden, you are actually drawing a horizontal ellipse >| (east-west oriented) in the real world. > >Are you sure you are talking about the Mercator projection? AFAIK, if >the circle is small, it will remain a circle. In the mercator >projection, as you move away from the equator the lines move further apart. > >The amount of distortion will depend on how large the circle is and how >far it is from the equator. >
Indeed, drawing in the new http://en.wikipedia.org/wiki/Large_Hadron_Collider tunnels at CERN will be interesting :-) Cheers Andy >Robert (Jamie) Munro >-----BEGIN PGP SIGNATURE----- >Version: GnuPG v1.4.6 (Darwin) >Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org > >iD8DBQFH6XxCz+aYVHdncI0RAuDDAJ0fcIMrEzf2AiCo4GDdlU8hNqPgZACgsS9f >RY3fyn3ViDMe+c4ETLL9z5Y= >=8DFj >-----END PGP SIGNATURE----- > >_______________________________________________ >talk mailing list >[email protected] >http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
