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 FileMaker Pro Custom Functions

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PrevRoundNumber ( number )

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Joe Rovang, N/A
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Shows next lowest round number (as to determine a chart minimum)

Sample Input:
PrevRoundNumber ( 42 )
Sample Output:
40


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

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed

Description:

This function finds the next lowest "round" number, based on whatever factor of ten the original number is based. For instance, 11 becomes 10; 200 becomes 100; 0.4 becomes 0.3; and -120 becomes -200. (In this function, a "round" number is regarded as an integer multiplied by some power of ten.)

This function might be useful for determining a chart's minimum scale (as in xmCHART): for example, if the minimum data point is -428, this function returns -500 as an appropriate chart minimum. It bumps already round numbers down (200 goes to 100), on the principle that a chart's data point should never lie directly on the minimum (An exception is made for zero.)

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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