_DimOrdinate: negative values?

Michael_Meyer · February 10, 2020, 4:28pm

Hi…,

how to get negative values for _DimOrdinate dimensions with negative x (x<0) and y (y<0)?

Thanks

Michael
www.flexiCAD.com

DiegoKrause · February 10, 2020, 4:56pm

you can select those and add a “-” in the properties panel:

Michael_Meyer · February 10, 2020, 5:07pm

Hi Diego,

thank you, and I know. I don’t like to do this manually.

Cheers

Michael

pascal · February 10, 2020, 6:55pm

Hi Michael - I am checking on this with the drafting experts here. I am pretty sure that is not a thing you can do now in Rhino, but it may be a perfectly legitimate wish item =)

-Pascal

Fred_C · February 10, 2020, 7:43pm

_EvaluatePt yields negative values

John_Brock · February 10, 2020, 7:47pm

As I recall, Ordinate or Datum dimension standards do not allow negative values.

mary · February 10, 2020, 9:13pm

Yes, this is my understand, as well.
Ordinate dimension display the absolute value along the x or y axis.

Here is AutoCAD’s ordinate dimensioning. It follows this rule, as well.

If you want the negative, you can work around this limitation by adding a “-” prefix to the dimension in the annotation style. Assign all the negative ordinate dims you want to style.

Or apply as an object override by adding a “-” before the <> in the Dimension properties of one or more selected dimensions.

Sincerely,
Mary Ann Fugier
McNeel Technical Support and Training

John_Brock · February 10, 2020, 9:18pm

Or place your Datum point below and to the left of your part.

Michael_Meyer · February 10, 2020, 9:37pm

Hi all,

thank you for your ideas. What I don’t want is to define positives or negatives manually.

Perhaps I should go another way with a script. I will see.

Thanks

Michael