Draping a string over a DTM

Task: Drape a spot height string over a DTM

1. Click Reset graphics .
2. Open topo1.dtm in Graphics.
3. Open dhcollar1.str in Graphics.
4. Choose Display > Hide strings > In a layer.
5. Enter the information as shown, and click Apply.



6. Choose Display > Point > Markers.
7. Enter the information as shown, and click Apply.



8. Press and hold down the mouse button to rotate the view of the drillhole collars as shown. By rotating the image, you can select the markers and not the DTM.



9. Choose Surfaces > Drape string over DTM.
10. Click one of the markers to select the string to drape over the DTM.
11. Enter the information as shown, and click Apply.



The DTM is displayed with draped markers.

Note: To see all of the steps performed in this task, run _09a_draping_a_spot_height_string_over_a_dtm.tcl. You need to click Apply on any forms presented.

Task: Drape a non-spot height string over a DTM

1. Click Reset graphics .
2. Open floor1055.dtm in Graphics.
3. Open centreline.str in Graphics.
4. Click Section view .
5. Choose Display > Point > Markers.
6. Enter the information as shown, and click Apply.





Note: The centreline.str only contains two points.

7. Choose Surfaces > Drape string over DTM.
8. Click the centreline string.
9. Enter the information as shown, and click Apply.



Note: The option to Interpolate new points is selected to create new points where the string crosses a triangle edge.

10. Choose Display > Point > Markers.
11. Enter the information as shown, and click Apply.



12. Click Plan view , and then click Edges on to display the DTM triangle edges.



Note: The points have been created at the intersection of the string and DTM triangle edges.

13. Save the string as centreline_draped.str.

Note: To see all of the steps performed in this task, run _09b_draping_a_non_spot_height_string_over_a_dtm.tcl. You need to click Apply on any forms presented.