Pulldown Menu Location: 3D Data > 2D to 3D
PolylineKeyboard Command: 2dto3dpt
Prerequisite: A polyline and points
This command converts a 2D polyline into a 3D polyline by using
the elevations of points. At each vertex of the polylines, the
program looks for a point with elevation at the same x,y location.
The points can be Carlson point blocks or POINT entities. This
routine can be useful if the linework is created in 2D at zero
elevation with commands like Design Polyline, and points with
elevation are located along the linework. Then the linework can be
converted into 3D polylines with this command. For example, a
centerline polyline with arcs may need to be created in 2D for
stationing because AutoCAD does not allow arcs on 3D polylines. To
use this polyline as a breakline in surface modeling, this command
can convert the polyline into a 3D polyline.
Enter the maximum offset tolerance <0.1>:
press Enter
Select polylines to convert.select polyline(s)
Select objects: 1 found
Select objects: press Enter
to conclude selection
Keep existing polylines [Yes/<No>]? Y
Layer name for 3D polylines <BREAKLINE>: press Enter
Select points from screen or by point number
[<Screen>/Number]? press Enter
Select points: (select by
window)
Specify opposite corner: 1647 found
Select points: press Enter
to conclude
Converting ...
Found 549 points on polylines.
Changed 1 polylines.
The routine will convert the 2D polyline into a 3D polyline and
place it on the indicated layer.
Pulldown Menu Location: 3D Data > 2D to 3D
Polyline