This command revises a segment of a contour polyline. Begin by
picking a point on the contour where you want to start editing.
Then pick new points for the polyline. When finished picking new
points, press Enter and then pick a point on the contour to connect
with the new points. The polyline segment between the start and end
points is then replaced with the new points.
If there is a triangulation file associated with the contours,
then the command prompts for whether to update the triangulation
surface file to match the contour edits. When this option is used,
data points are added to the triangulation surface along the edited
contour segment to make the triangulation surface match the contour
line. Existing triangulation source data is retained. So the
updated triangulation is the combination of the original source
data and the additional points from Edit Contours. One way to get a
triangulation surface associated with the contours is to use the
Triangulate & Contour command with both Write Triangulation
File and Draw Contours options active.
Note: If the
triangulation association is not used, then this routine has no
effect on the actual triangulation or grid surface model file that
the contours may have been drawn from. It only revises the drawn
contour or polyline on the screen. If the contours are later
regenerated from this file, the edits will be discarded.
Select contour to edit: pick the contour polyline at
the place to start editing
Pick intermediate point (Enter to End): pick a
point
Pick intermediate point ('U' to Undo, Enter to End): pick
a point
Pick intermediate point ('U' to Undo, Enter to End):
press Enter
Pick reconnection point on contour: pick the contour
polyline at the place to join
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Edit this contour by picking new points |
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Contour with segment replaced with new points |
Pulldown Menu Location: Surface >> Modify
Contours
Keyboard Command: editctr
Prerequisite: Polylines with elevation (contour
polylines)