Brian Dunning's FileMaker Custom Functions

interpolation ( y1 ; y2 ; y3 ; x1 ; x2 ; x3 ; x1y1 ; x2y1 ; x1y2 ; x2y2 ; rnd )

Interpolates single lines and cross table

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Eric van Oosterom   Eric van Oosterom
HarperMac Marine Survey

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  Sample input:
  Sample output:

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

Works good for cross interpolation in tables and linear interpolation.

Needed a interpolation function that could make a cross interpolation because in my line of work we work with linear and cross table interpolation, could only find other types of interpolation so created this function.



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

Under construction. Email me your wish list for improvements.