Formulas with Numerical Instance Parameter Values

[Chad Smith]

I was just searching through the help for 'formulas' and I came across this little beauty and I just had to share for those who didn't.

----- Straight from the Help -----

Formulas are available for instance parameter values in the project also. You must begin the formula with an equal sign. For example, as you sketch a wall, you can enter a formula for the temporary dimension for the wall. Click , and you can enter formulas for numerical properties of the wall, such as Unconnected Height and Base Offset.

Tip: Keep your units consistent. Do not mix units in your formulas. You can use constants with no units assigned to them.

----------

E.g. Entering the temp dimension length of a wall could be '=2000*2/4'

[beegee]

Its neat, .. but I'm having difficulty seeing a practical application.

[LRaiz]

Want to make a wall 2 1/4 inches longer but are not sure about your ability to compute the result w/o a calculator? Click on dimension value and modify value to = oldValue + 0' 2 1/4"

- LR

[Scott D Davis]

or could you simplify by using:

= oldvalue + 0-2.25

Instead of the ' & " & / marks?

Actually, just tried both ways, and I cant get either one to work. I get "invalid input"

[beegee]

Want to make a wall 2 1/4 inches longer but are not sure about your ability to compute the result w/o a calculator? Click on dimension value and modify value to = oldValue + 0' 2 1/4"

- LR

We metric users don't run into those sorts of issues ( Like 24' 5 & 7/16" plus 2' 9 & 3/4" - for us its straigtforward - 7453 mm+ 857mm ) :) But I see your point of view.