On 13 April 2010 01:59, Steve Hill <[email protected]> wrote: > ...for tracing bodies of water - you need to walk the perimeter with a > GPS... > I've always wanted to fix up a pole about 6-10ft with a secure GPS mount on one end, and possibly a harness or neck strap to carry the other end on me. Then walk along the side of a river/lake at a safe distance with my GPS hovered above the line where the water meets the bank.
A similar idea entered my mind where I would have a kick stand on my bicycle and a broom pole sticking up from the bike. I would stand the bike some distance away from the corner of a building and note the GPS location of the bike, record another location where my line of sight of the building corner is obstructed by the broom pole from the bike. I repeat for a few more line bike and sight positions. So at home I have pairs of points (bike and view/sight) I draw lines between them and extend each line beyond it's point (keeping the angles). Where the lines cross is the location of the building corner. I also repeated all this for the other building corners (let's hope it was a simple rectangle) and I have produced a good outline/positioning of the building where perhaps I could not get up next to it (or it's height created an urban canyon for my GPS). Now a days I'm just thinking about possible data imports and when Yahoo! will fly over that countryside industrial park surrounded with ponds. How boring. -- Gregory [email protected] http://www.livingwithdragons.com
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