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 FileMaker Pro Custom Functions

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PolygonArea ( xlist ; ylist )

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Jeremiah Small, Soliant Consulting
http://jsmall.us

Calculate area of a polygon from array of XY coordinates

Sample Input:
PolygonArea ( List ( 0;3;0 ) ; List ( 0;0;3 ) )
Sample Output:
4.5


 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Description:

Calculate the area of a polygon from an arbitrary number of xy coordinates. It uses an old surveying technique called Double Meridian Distance.

Requires helper function: PolygonAreaHelper

Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it

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