ceil functions in parameters

[justinpcaris]

I am trying to use the ceil functions in parameters and it wont allow me to reference a dimension.  I understand that the equation that I am using ceil in has to be unitless but do the units im refrencing also have to be unitless.  I want to divide a dimension my 21 then round up to the nearest whold number.  I am using inventor 2014.

[JDMather]

Post simple example here.

The solution will involve getting correct units and unitless in the equation.

[cwhetten · Accepted solution]

Yes, the ceil( ) function expects a unitless value and returns a unitless value.  For example, if you have a parameter named Width whose units are mm, your ceiling function would have to look like this:

ceil( Width / 1mm ) * 1mm

See these other topics for additional help:

http://forums.autodesk.com/t5/Inventor-General/Parameter-Not-Rounding-Correctly/m-p/4497453/highligh...

http://forums.autodesk.com/t5/Inventor-General/Parameter-Rounding-to-Multiples-similar-to-MROUND-in-...

Cameron Whetten
Inventor 2014

Please click "Accept as Solution" if this response answers your question.

[justinpcaris]

Thats it thanks for the help.