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 FileMaker Pro Custom Functions

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RandomWeightedRank ( total )

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  Average rating: 3.9  (46 votes)
  Discuss this Custom Function

Jeremy Bante,
https://github.com/jbante/

Returns a random integer between 1 and total such that the probability of each number is proportional to itself.

Sample Input:
List (
RandomWeightedRank ( 10 );
RandomWeightedRank ( 10 );
RandomWeightedRank ( 10 );
RandomWeightedRank ( 10 );
RandomWeightedRank ( 10 );
RandomWeightedRank ( 10 );
RandomWeightedRank ( 10 );
RandomWeightedRank ( 10 );
RandomWeightedRank ( 10 );
RandomWeightedRank ( 10 )
)
Sample Output:
6
9
7
10
10
9
3
6
7
5


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

Description:

Returns a random integer between 1 and total such that the probability of each number is proportional to itself. For example, 2 is twice as likely as 1, and 3 is 3 times as likely as 1. This may be useful for ordinally weighted lotteries, where applicants have a number of lottery tickets determined by some ranking. For example, you might want to randomly award a scholarship, but you might also want individuals with greater financial need to be more likely to receive the scholarship.

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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