Re: [OSM-talk] maritime borders (was: administrative boundaries and is_in)

2008-01-13 Thread Robin Paulson
On 13/01/2008, Robin Paulson [EMAIL PROTECTED] wrote: i'll start a wiki page. anyone here have any experience with drawing libraries? i'm sure we can do this by re-using something that's already there ok, here we go. i've put in some rough details of the method i suggested earlier. if anyone

Re: [OSM-talk] maritime borders (was: administrative boundaries and is_in)

2008-01-12 Thread Martijn van Oosterhout
On Jan 12, 2008 11:32 AM, Igor Brejc [EMAIL PROTECTED] wrote: That would be an interesting thing to implement. It would involve creating a union of circles (with radius of 12 NM) and then determining the border of that union. If only I had the time... :) I thin you'd approach it from the other

Re: [OSM-talk] maritime borders (was: administrative boundaries and is_in)

2008-01-12 Thread Robin Paulson
On 12/01/2008, Igor Brejc [EMAIL PROTECTED] wrote: Just as a curiosity: 12 NM was chosen because it it the farthest point a person can see from the shore (due to Earth's roundness). Or something like that :) according to wp, it was the range of a cannon in 14th c or something

Re: [OSM-talk] maritime borders (was: administrative boundaries and is_in)

2008-01-12 Thread Robin Paulson
On 12/01/2008, Martijn van Oosterhout [EMAIL PROTECTED] wrote: On Jan 12, 2008 11:32 AM, Igor Brejc [EMAIL PROTECTED] wrote: That would be an interesting thing to implement. It would involve creating a union of circles (with radius of 12 NM) and then determining the border of that union. If