parameters - can't take cube root of parameter with inch units

[turningGCH43]

I'm stumped by this one, probably a simple solution.

I have parameters:

name          units     expression            value
diameter      in        27                    27
dia_no_units            27                    27

D_cube_root   in        diameter ^ (1/3)      <<<< not allowed (stays red)
D_cube_root             diameter ^ (1/3)      <<<< not allowed

D_cube_root   in        dia_no_units ^ (1/3)  3   <<<< works

I can't get cube root to work on values that have units. Also tried power function. 

Is there a way to de-unitize a parameter so that I can just use the math function?

[jeff_strater · Accepted solution]

units cancellation (divide by 1mm to cancel out the units) seems to work

[turningGCH43]

Thanks. 
I knew there had to be a way to cancel units. Dividing by units is very unintuitive. I was aware of the multiply by units.

Both seem a little hack-y to me.

Additionally, I did not find this documented anywhere. No mention of it with all the parameter & function documentation that I could find. Maybe I missed it.  

[g-andresen]

Hi,

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@turningGCH43  schrieb:

 Dividing by units is very unintuitive. I was aware of the multiply by units.

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During my time at school, I learned to set up unit equations in parallel with numerical equations.*
This was a method to reduce errors in the calculations.
It still helps me today when developing equations in Fusion.

günther

* The slide rule and later the pocket calculator knew no units.

[turningGCH43]

Yeah, I totally get and agree that having the units carried along is a good idea and useful as a cross check in a lot of situations. The problem is that it won't let you take the cube root of a linear unit parameter. I needed this for a screw tolerance calc from spec formulas.

now that I know the /unit trick, it's not a big deal.