This video was published  to generate questions for the then upcoming vasari talk webinar.

“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.”

You can watch Vasari webinar on this topic (as well the whole series of webinars) on the Vasari wiki:

http://wikihelp.autodesk.com/Vasari/enu/Community/Tutorials/Vasari_Talk_-_Design_and_Analysis_Webinars

via Zach Kron’s buildz blog