Forum Discussion

AndreaPahor's avatar
AndreaPahor
Qrew Cadet
6 years ago

How do I get a Formula Numeric filed to display null not 0?

I need a formula numeric field (called No of Vehicles) to return null and not 0 when a condition is met: 

If ([No of Techs/Vehicle] = null, null)

The full formula for this field (No of Vehicles) is:

If ([No of Techs/Vehicle] = null, null,
If ([Vehicle per technician] = "Yes", ToNumber([No of Technicians]),
If ([Vehicle per crew] = "Yes", ToNumber([No of Crew])
))

Note: 
No of Techs/Vehicle is a formula numeric field
Vehicle per technician is a text - multiple choice field
Vehicle per crew is a text - multiple choice field

Thanks in advance for any help!

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Andrea Pahor
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Formulas and functions
  • DonLarson's avatar
    DonLarson
    Qrew Elite
    6 years ago
    Andrea,

    Try this:

    // Calculate the Vehicles Per Tech
    var number VehiclesPerTech =If ([Vehicle per technician] = "Yes", ToNumber([No of Technicians]);
    // Calculate the Vehicles Per Crew
    var number VehiclesPerCrew = If ([Vehicle per crew] = "Yes", ToNumber([No of Crew]);
    // Calculate the Techs Per Vehicle, Account for the case where the denominator is zero
    var number TechPerVehicle =  if( $VehiclesPerCrew=0, 0, $VehiclesPerTech/$VehiclesPerCrew);
    // Control the UI to show a Null Value of the answer is Zero
    if ( $TechPerVehicle=0,null, $TechPerVehicle)

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    Don Larson
    Paasporter
    Westlake OH
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    • AndreaPahor's avatar
      AndreaPahor
      Qrew Cadet
      6 years ago
      Thanks, Don - much appreciated. 

      I omitted some key information:

      No of Technicians / No of Crew can be unspecified (TBD), in which case the formula should return null. 

      For example, I want a result of null if Vehicle per technician = "Yes" and No of Technicians = "TBD".

      How would I build this into your suggestion?

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      Andrea Pahor
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      • DonLarson's avatar
        DonLarson
        Qrew Elite
        6 years ago
        Andrea,

        Updated for that business case and fixed the 1st If Statement.

        // Calculate the Vehicles Per Tech.  Gives us the Number of Technicians or Zero
        var number VehiclesPerTech =If ([Vehicle per technician] = "Yes", ToNumber([No of Technicians],0);

        // Calculate the Vehicles Per Crew, Account for TBD in the Number of Technicians.  Gives us the Number of Technicians or Zero
        var number VehiclesPerCrew = If ([Vehicle per crew] = "Yes" and [No of Technicians]<>"TBD" , ToNumber([No of Crew],0);

        // Calculate the Techs Per Vehicle, Account for the case where the denominator is zero
        var number TechPerVehicle =  if( $VehiclesPerCrew=0, 0, $VehiclesPerTech/$VehiclesPerCrew);

        // Control the UI to show a Null Value of the answer is Zero.  This is the objective of the formula.
        if ( $TechPerVehicle=0,null, $TechPerVehicle)



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        Don Larson
        Paasporter
        Westlake OH
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