Pipe Tables: Label Expressions

Pipe Tables: Label Expressions

jsonia3PCXH
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Message 1 of 8

Pipe Tables: Label Expressions

jsonia3PCXH
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Why might my pipe table be showing the expression name vs. the value of the expression? Some of my expressions work in the table and some don't.

jsonia3PCXH_0-1652965959721.png

 

All the columns are expressions I made but only the middle 3 are giving me a value. 

 

This is the Trench Width expression

jsonia3PCXH_1-1652966023499.png

 

This is the Height Expression

jsonia3PCXH_2-1652966049588.png

 

the depth equation = {Start Cover} + {Pipe Diameter or Width} 

average = {End Depth} + {start Depth} / 2

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828 Views
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Message 2 of 8

Joe-Bouza
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Not sure. can you share

Joe Bouza
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Message 3 of 8

jsonia3PCXH
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I have attached my drawing for your reference. 

 

Thank you

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Message 4 of 8

user181
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Accepted solution

You have parenthesis () in the expression names. You need to remove them and I don't think you can rename expressions, so you need to recreate them. 

Message 5 of 8

Joe-Bouza
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I cant explain why but I had a similar situation that I resolved by "declaring  the variable" it is redundant but it works

 

example take one of your expressions and describe it as a declared variable. for instance Trench Width (Outer Diameter). Make a new expression TW_O in the composer assign the declared variable Trench Width (Outer Diameter)

 

and it works. See attached.

pardon I used really crumby titles for the expressions i created but you will get the idea an remake to your liking

 

Joe Bouza
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Message 6 of 8

Joe-Bouza
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Interesting. I took a different approach 

Joe Bouza
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Message 7 of 8

jsonia3PCXH
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This worked! And looking at it makes sense. I relabeled with an _ and was able to get a completed table 

 

jsonia3PCXH_0-1652980110448.png

 

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Message 8 of 8

bhurlong
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good morning
I understand that these tables are for gravity piping, since the pressure ones it is impossible to incorporate expressions to them or at least that is what is happening to me.

I have a total gravity piping table calculating excavations and backfills by means of expressions and it is perfect.

And I want to do the same for the pressure ones, and it does not detect what I create in expressions, that at first. And secondly, when I select the gravity pipe and I see normal properties, I get nothing, but when I do the pressure pipe I get in properties in a special section called expressions.

Someone found a solution and was in the same situation, thank you.

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