TO_GEOPOINT

Converts an input value to a geo_point value.The input can be a single- or multi-valued field or an expression.
The input type must be a string or a geo_point.A string will only be successfully converted if it respects the
WKT Point format:
row wkt = "POINT(42.97109630194 14.7552534413725)"
| eval pt = to_geopoint(wkt)
