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Forums >> Revit Systems >> Technical Support >> Parameter Formulas and "Grips"

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Tue, Nov 19, 2013 at 6:01:19 PM | Parameter Formulas and "Grips"

#1

setver62


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Joined: Mon, Jul 11, 2011
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Is it possible to have a parameter with a formula AND "grips"? Or is this just a wishlist item? If so, what is the process?


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setver62

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Tue, Nov 19, 2013 at 6:06:54 PM | Parameter Formulas and "Grips"

#2

WWHub


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I don't understand how that would work.  You can have grips (instance based parameter) or you can use a formula using other parameters.

 

Maybe a better explanation of what you want would help.


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Tue, Nov 19, 2013 at 8:55:54 PM | Parameter Formulas and "Grips"

#3

setver62


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Just want to know if you can have a formula and still get grips for that parameter. I am trying to create a parameter that uses a formula when inserted, or other parts are modified, but it can also be modified with grips. The grip modification would also feed back to the formula for final modification.

I have a face-based family (required for my needs) that needs an extrusion that stretches in 2 inch increments. If there is a way to either embed a line-based array family in the family I have, or a way for the face-based family to have this feature, that would eliminate the need for a formula.

Thanks in advance...


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setver62

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Wed, Nov 20, 2013 at 6:45:21 PM | Parameter Formulas and "Grips"

#4

TKennedy


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It sounds like you need to do exactly what I did with a shelving unit family. I ended up using two parameters and two reference planes. The first parameter would be Length_Adjust, and would be tied to a the first ref plane set as a weak reference. This will give you a set of grips you can adjust in the plan. The second parameter would be Length_Actual, and would be tied to the second ref plane set as not a reference. The family geometry is tied to that ref plane. The Length_Actual parameter contains your formula, and reads Length_Adjust.

 

Hopefully that's clear enough for now, I don't have time to post a family or formulas.


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Wed, Nov 20, 2013 at 11:18:13 PM | Parameter Formulas and "Grips"

#5

setver62


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Thanks, I'll try that.


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setver62

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