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Small Circles and Ellipses

Define small circles and ellipses

Functions

ellipse1Geographic ellipse from center, semimajor axes, eccentricity, and azimuth
gcxscIntersection points for great and small circle pairs
scircle1Small circles from center, range, and azimuth
scircle2Small circles from center and perimeter
scirclegSmall circle defined via mouse input
scircluiGUI to display small circles on map axes
scxscIntersection points for pairs of small circles
sectorgSector of small circle defined via mouse input

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