GetPolygonArea()

Summary

Computes the area of a closed polygon.

 

Syntax

result = GetPolygonArea(array coords)

 

Argument	Contents
coords	An array of coordinates that define an area

 

Returns

A real number indicating the area of the polygon in map units.

 

Notes

• The polygon is defined by an array of coordinates that begins and ends with the same point.

• GetPolygonArea() handles only simple polygons. If the polygon is made up of separate islands or has holes, each island or hole must be treated as a separate polygon.

• The area calculation is a spherical calculation that is performed on the surface of earth.

Example

// Use this code in a toolbox tool or the immediate execution

s = ClickShape()

a = GetPolygonArea(s)

ShowMessage("Your area is " + r2s(a) + " square " + GetMapUnits())

Error Codes

Error Type	Meaning
Error	The polygon is invalid

 

See Also

Function	Summary
GetArea()	Gets the coordinates that describe an area feature
GetDistance()	Computes the great circle distance between two coordinates
GetFeatureArea()	Returns the area of the feature in current map units