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)...
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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    • AndreaPahor's avatar
      AndreaPahor
      Qrew Cadet
      6 years ago
      Thank you, Don.

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      Andrea Pahor
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