I need to convert my surface boundary to a polyline so I can use it to clip another surface. Is there a simpler way than tracing it with the polyline command?
Solved! Go to Solution.
Solved by sjg. Go to Solution.
also after getting a polyline from this method remember to use drawing cleanup with the simplify linear objects and set it to 0.5 tolerance to reduce the number of vertices drastically.
Hi,
stumbled upon your post searching for a solution to a problem of mine...
anyway I just wanted to tell you about the adding boundary option of using a surface as the hiding object. This way the clipping of your surface A is dynamically linked to the other surface (B).
The way you get to use a surface as the hiding object is to normally create a boundary in the definition. Use type: hide, and then when you are asked to select object press "s". This way Civil lets you select an existing surface. However! The surface used as hiding boundary CAN NOT have islands. If it does Civil will give you an warning like "error adding boundary"...
- F
I hate how this thread is 6 years old and i cant make a new quesiton beyond this one.... I know you can select the surface and extract the boundary or contour data, the issue im having is that when i extract the boundary the elevations along the boundary are generalized to one number and its not even the high or low point its some sort of average... as I am making a grading plan for a ramp, and have a surface for the ramp, i need to retain all the correct elevations in order to produce an accurate grading plan. PLEASE HELP!!!
ok, then why when i make the grading plan do i have a discrepancy between the proposed surface and the grade to EG. It looks like the ramp surface is floawting above EG which the grade should be between the two..