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Equation not working. Need help

Ben_Ben_ OS Professional, Mentor, Developers Posts: 287 PRO
edited November 2017 in Community Support
I have this equation for a dimension using variables:

(245-((#ARC1+#ARC2)))/2

The first minus sign after 245 is the problem. When digging into this to see what is wrong, If I try a minus, plus, division operator it does not work. If I try a multiplication operator it does work. 

(245-((#ARC1+#ARC2)))/2 gives error "enter a valid function"
(245+((#ARC1+#ARC2)))/2 gives error "enter a valid function"
(245/((#ARC1+#ARC2)))/2 gives error "enter a valid function"
(245*((#ARC1+#ARC2)))/2 works

What am I doing wrong or is this a bug?

Best Answers

  • Ben_Ben_ OS Professional, Mentor, Developers Posts: 287 PRO
    Answer ✓
    Do either of the variables have units? It might be worth removing the units from the variables and adding them in the dimension instead.
    No units they are copy and pasted from the dialog

Answers

  • konstantin_shiriazdanovkonstantin_shiriazdanov Member Posts: 1,221 ✭✭✭✭✭
    did you tried (245-(#ARC1+#ARC2))/2 or (245-#ARC1- #ARC2)/2 ?
  • abefeldmanabefeldman Member Posts: 166 ✭✭✭
    Do either of the variables have units? It might be worth removing the units from the variables and adding them in the dimension instead.
    Abe Feldman
    UX/PD/Community Support
  • Ben_Ben_ OS Professional, Mentor, Developers Posts: 287 PRO
    Answer ✓
    Do either of the variables have units? It might be worth removing the units from the variables and adding them in the dimension instead.
    No units they are copy and pasted from the dialog

  • Ben_Ben_ OS Professional, Mentor, Developers Posts: 287 PRO
    did you tried (245-(#ARC1+#ARC2))/2 or (245-#ARC1- #ARC2)/2 ?
    Neither of these work unfortunatley

  • lanalana Onshape Employees Posts: 661
    @Ben_
    Does (#ARC1+#ARC2) / 2 work?
  • Ben_Ben_ OS Professional, Mentor, Developers Posts: 287 PRO
    lana said:
    @Ben_
    Does (#ARC1+#ARC2) / 2 work?
    Yes that portion of the equation works but as soon as I try and subtract it from 245 is does not
  • abefeldmanabefeldman Member Posts: 166 ✭✭✭
    Testing this out I set

    ARC1 = 45 deg
    ARC2 = 45 deg

    All of the equations but the last fail because 245 does not have consistent units with either of the variables.

    Changing the variables to the "Any" unitless option succeeds:

    ARC1 = 45
    ARC2 = 45

    Or you could enter ((245*deg)-(#ARC1+#ARC2))/2, but be sure there's no "deg" unit appended to the end.
    Abe Feldman
    UX/PD/Community Support
  • Ben_Ben_ OS Professional, Mentor, Developers Posts: 287 PRO
    edited November 2017
    Testing this out I set

    ARC1 = 45 deg
    ARC2 = 45 deg

    All of the equations but the last fail because 245 does not have consistent units with either of the variables.

    Changing the variables to the "Any" unitless option succeeds:

    ARC1 = 45
    ARC2 = 45

    Or you could enter ((245*deg)-(#ARC1+#ARC2))/2, but be sure there's no "deg" unit appended to the end.
    I have not used degree units! The ARC1 and ARC2 are lengths defined only by a number in my document (FYI they are arc lengths not arc degrees)

  • Ben_Ben_ OS Professional, Mentor, Developers Posts: 287 PRO
    I need to eat a little crow now... In the end if I added mm to the 245 it works thus (245mm-(#ARC1+#ARC2))/2 works but (245-(#ARC1+#ARC2))/2 does not. 
  • Ben_Ben_ OS Professional, Mentor, Developers Posts: 287 PRO
    It would be nice if the variables defaulted to unitless. IMHO
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