How to get the points of [lat, lon] of a full great circle?

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Ray Lee 2014-11-27

评论： Trung Ngo 2019-5-23

the matlab function gcwaypts generates points on the short arc of the great circle across two given points.

How to get the full great circle?

Kelly Kearney 2014-11-27

I would use a combination of azimuth, gc2sc, and scircle1:

az = azimuth(lat1, lon1, lat2, lon2)
[lat, lon, r] = gc2sc(lat1, lon1, az)
[latc, lonc] = scircle1(lat, lon, r)

Trung Ngo 2019-5-23

Hi Miss Kearney,

Between gcwaypts, track2 and your method. Which one is more preferable. I am doing this which take account of the ellipsoid.

[GClat_check,GClon_check]=track2('gc',startLat,startLon,endLat,endLon,referenceEllipsoid(7030),'degree',51);

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