Returns a true/false answer on whether the given geo-point is within the given polygon.
Syntax
INPOLYGON(point, polygonPoints)
Example
INPOLYGON({{myGpsVal}}, '-8.6782523 27.2918257|-8.6672229 28.7094422|-7.6447228 29.3849982')
Notes
Polygon values must be pipe-seperated string of geo-points.
Related
MIBETWEEN, KMBETWEEN