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celestial.search
Alexander Krassilchtchikov edited this page Jan 1, 2024
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The celestial.search package contains functions related to various search requests of points and forms on the sphere.
- celestial.search.find_coo - Cone search in a table with spherical coordinates
- celestial.search.match_coo - Match two lists by spherical coordinates
- celestial.search.match_coo_nearest - Match two lists by spherical coordinates for nearest source only
- celestial.search.rectOverlap - Test if spherical rectangles are overlapping/intersecting
- celestial.search.isPointInsidePolygon - Tell if a point on a sphere falls inside a given spherical polygon
Note: the function will work even if the polygon includes one of the poles, but not both poles at a time. The polygon definition must not be closed, i.e. the first and the last point in the list should not be the same.
# take a polygon defined by its vertices (Lon, Lat) and a point in the same coordinates
# and test whether the point falls inside the polygon:
Pol = [0, 0; 45, -30; 90, 0; 90, 40; 45, 20; 0, 40];
Pt = [80, -1];
Result = isPointInsidePolygon(Pt(1), Pt(2), Pol);
AstroPack/MAATv2 - MATLAB Astronomy & Astrophysics Toolbox
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