[Loadstone] Lattitude and Longitude Distance Calculation

Rob Melchers rob at loadstone-gps.com
Fri Dec 22 18:20:01 GMT 2006

Distance between:
Point A (Latitude 34.626563and longitude -84.193983)
Point B (Latitude 34.631090and longitude -84.195465)

0.521 km, Great Circle formula, and
0.52 km, Accurate Ellipsoid formula.

Point B is at 344.9 degrees, or North North West, from point A.

At 12/22/2006, you wrote:
>Can I ask someone to calculate the distance between the two points below?  I
>am attempting to convert center line data for the Appalachian Trail in
>preparation to using Loadstone to hike it.  The data file contains
>over 300,000 points.  The points below represent the first and twentieth
>points.  I believe I can convert the data myself but don't want to convert
>over 300,000 points.  First, that would take a great deal of time.  Second,
>that would probably overwhelm my phone and my ability to deal with the data
>I would have.  Therefore, I want a representative sample or number of
>points.  I thought every twentieth point might be a good number to get an
>idea of the distance between two points.  I intend to use that information
>to decide how many points to convert.
>I have good shelter data and will probably get data for other landmarks.
>There are about 300 shelters in an over 2,000 mile-long trail.  That leaves
>large gaps about which I have no information.  I want to convert enough
>center line data to make sure I know where I'm going between named points
>for which I have data.  I want something similar to the white blazes sighted
>people use to hike the same trail.  Any help calculating distances between
>points would be appreciated.
>34.626563 -84.193983
>34.631090 -84.195465
>Thank You and Happy Holidays,
>Mike Hanson
>Loadstone mailing list
>Loadstone at loadstone-gps.com
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