math:arctan2() Calculates the angle in radians from the positive x-axis to the point (x, y) in the plane. ParameterTypeRequiredDefault ValueDescriptionasstringoptional[a]_arctan2 The name of the output field. xstringrequired The x-coordinate. ystringrequired The y-coordinaty. [a] Optional parameters use their default value unless explicitly set.
