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How do I output <null> in attribute table after calculation

  • May 13, 2022
  • 2 replies
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Z
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Hello Sir / Madam,

 

So I would like to subtract both "Top Height" and "Rooflevel" attributes.

 

I use attribute manager to calculate the value

@round(@abs(@Value(TopHeight)-@Value(ROOFLEVEL)),1)

 

The result is shown as below.

However, I want my result to be <null> if either TopHeight or Rooflevel is <null>. May I ask how to do it?

 

Thank you.

 

Zachary

Best answer by ctredinnick

You can use a Conditional Value. It's in the dropdown when you set an attribute value in the AttributeManager, underneath 'Open Arithmetic Editor'

image 

 

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ctredinnick
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  • May 13, 2022

You can use a Conditional Value. It's in the dropdown when you set an attribute value in the AttributeManager, underneath 'Open Arithmetic Editor'

image 

 

Z
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You can use a Conditional Value. It's in the dropdown when you set an attribute value in the AttributeManager, underneath 'Open Arithmetic Editor'

image 

 

Got it! thank you so much for your prompt response! :)

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