I am generating contours using the surface modeler but along the 
boundaries the contouring is giving me zingers, mostly straight lines 
right along the boundary.

To clean it up I created a bounding box then scaled it slightly ( I 
assumed it would scale about the middle of the box) but I did not get 
the results I wanted. I would like to offset the box say 5 meters 
inward then use it to clip the contours.

Any suggestions?

What about if I want to clip them in 3d? (Take the box drape it onto 
the contours then use it to clip the contours?)

Thank you for any help







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