Equation not working. Need help

Ben_

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?

Ben_

abefeldman said:

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

abefeldman

Yes, the underlying problem is the unit mismatch. Regardless of whether it was a length or angle, the fact that the variables had units and the number they were being added to did not was causing the problem. Removing the units from the variables or adding it to the number are both valid ways of fixing the issue.

abefeldman

Logged an improvement for you @Ben_

konstantin_shiriazdanov

did you tried (245-(#ARC1+#ARC2))/2 or (245-#ARC1- #ARC2)/2 ?

abefeldman

Do either of the variables have units? It might be worth removing the units from the variables and adding them in the dimension instead.

Ben_

abefeldman said:

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_

konstantin_shiriazdanov said:

did you tried (245-(#ARC1+#ARC2))/2 or (245-#ARC1- #ARC2)/2 ?

Neither of these work unfortunatley

lana

@Ben_
Does (#ARC1+#ARC2) / 2 work?

Ben_

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

abefeldman

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.

Ben_

abefeldman said:

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_

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. 

abefeldman

Yes, the underlying problem is the unit mismatch. Regardless of whether it was a length or angle, the fact that the variables had units and the number they were being added to did not was causing the problem. Removing the units from the variables or adding it to the number are both valid ways of fixing the issue.

Ben_

It would be nice if the variables defaulted to unitless. IMHO

abefeldman

Logged an improvement for you @Ben_

JanaLumi

I'm having the same issue. Cannot remove the units from the variables, nor does it access units in the calculation.

For example, in the calculation:

((#depth/#joins))-0.2) mm
→ this works

(#depth/#joins)+#adj
(#depth/#joins)+#adj mm
→ neither of these are accepted and I get the error message: "cannot subtract unitless number and length"

S1mon

(#depth/#joins) is unitless.

#adj has units.

you could do (#depth/#joins mm)+#adj

What you probably want to do is switch joins to be a number not a length. Then the equation would be #depth/#joins + #adj.