### Vasari Talk: Formula Foo

###### Register now! Wed, March 21, 2012 11:30 AM - 12:30 PM EST

Questions on this topic? Post them here.

Summary: Parameterizing a dimension? Easy. The fun really begins when you manipulate and even create geometry using formulas.

• Learning Goals: At the end of this session, you will be able to
• Use basic Revit/Vasari formula syntax including conditionals, operators, rounding, and math constants such as sin, cosine and pi.
• Use some simple formulas to manipulate a parametric massing family to explore various permutations
• Reference parameters from a nested family in a formula

Edit:  Let’s try something new.  I’m going to do something like this tomorrow.  You can watch ahead of time and then have questions for tomorrow.

Formulas in Families

1. It would be nice if someone at your end would publish an example tutorial before the meeting so that we can engage you with more substantial questions/comments during the meeting.

Revit User
Peter

2. Hi Peter,
Good idea, let's try. Check out this video
This is what I was thinking about doing tomorrow

3. Hi Zach, would a recording of the webinar be available for those of us who can't make it to your session?

4. Yes, we will have a video available later in the week.

5. Hi Zach, I'm really appreciating you efforts in making things easy with us... And i would ask you if there's any links which explaining how to make forms like the one in the next link? (i mean the freeform pattern) http://static.ziftsolutions.com/clients/autodesk/assets/revit/images/revitarch_2012_visual_display_opt_1_large_1400x696.jpg

6. Hi Ayman,
The pattern in that image is actually just a manually drawn void that is subtracted from a wall by face. Good old fashioned hard work by Angela.

7. Hi Zach,

I was just trying to build this model in revit with the same formula, but when I start using "if" i am having an error saying "unexpected end of expression".
I am not sure what I am missing, Do you have any idea what I might be doing wrong?

thanks

ilkay Standard

8. Ilkay,
Sounds like you might be missing a parenthesis

9. yes! i actually realized right after I asked you:)

Thanks,

ilkay