Create Point Group From Station-Offset
This feature allows you create a point group by locating all the
points along a predefined alignment at a given offset. It then
sorts the points by station and saves the points to a new Point
Group.
Select Create Point Group from Station-Offset from the menu.
Use the Select a C&G Point Group File: to open the point group
file specifying the points in the alignment.
At the Calculate new points on the control line [Yes/No] <Y>
prompt,
If you answer no to this prompt, the points chosen by you in the
previous step will be saved in station order to the new point group
file.
If you answer yes to the prompt, a new point will be created
exactly on the offset line for each point found in the coordinate
file that lies within the given range. The elevation of the new
point will be set to the elevation of the nearby existing point and
the new point IDs will be written to the new point group file
instead of the existing point IDs.
Repeat the above steps to specify another offset.
Press D for <Done> to exit.
Prompts
At the Enter Offset
<0.00000>: Type an offset if desired or just press
enter for no offset. Offsets to the left should be preceded by a
"-".
At the Enter Maximum Range
<0.0000>: Specify the tolerance for points not exactly
on the alignment.
Choose initial points for base
selection set from coord file. (Enter when done)
[All/Block/Code/Desc/Elev/Pt_group/Limits/Radius/Select]:
Use the various methods available to choose the points to be tested
for being within the tolerance from the alignment.
Calculate new points on the
control line [Yes/No] <Y>: Type "Y" and Enter or just
Enter to create new points on the alignment for those points found
to be near the alignment and place these new point IDs in the point
group being created. Type "N" and Enter to place the existing
points in the point group being created.
Pulldown Menu Location:
CG-Survey > Cogo > Station Offset
Keyboard Command:
cg_bpf_from_sta
Prerequiste:
coordinate file, point group containing the points in the
alignment