Subject: Re: [BoundaryPoint] Re: great roundup of circle boundaries in the united states
Date: Oct 10, 2000 @ 18:35
Author: michael donner (michael donner <m@...>)
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>
>There is always a great circle route between two points on a sphere
>(the great circle is the intersection of the sphere and the plane
>defined by the two points and the center of the sphere), so this
>raises the question of what is meant when boundary lines connect two
>monuments along a "straight" line. It should be the great circle
>route? How it looks on the map depends on the map projection.
>
>For example, the US/Canada boundary along the 49th parallel is not a
>great circle route when defined that way, but it is actually made up
>of numerous discrete segments, which probably are great circle
>routes. The US should maybe insist on a great circle connecting the
>Lake of the Woods and NW washington State, for simplification of the
>boundary of course.
>
>BJB