vsTASKER 7 User Manual
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Index

Surface Editing

 
Use this panel to modify the elevation terrain profile.
The alteration added is either a smoothed hill or cavity.
 
Surface Editing
1

Type

1. Type
Select here the type of alteration you want to add on the terrain (Hill or Cavity, see image below)
 
2

Altitude

2. Altitude
Set here the altitude (amplitude) of the alteration, meaning, the highest (or lowest) point of the added hill (or cavity)
 
3

Radius

3. Radius
Width of the base of the alteration.
 
4

Position

4. Position
Use the arrow button to select on the terrain map the center of the alteration that must be added on the actual terrain.
Mouse will change to a + for position selection on the map.
 
5

Apply

5. Apply
Apply the alteration (hill or cavity) on the terrain, at the specified position.
Cannot undo !
6

Map Selector

6. Map Selector
Select from the list of elevation layers the map to work with.
 
7

Despeckle

7. Despeckle
Use this option to remove artifacts that might appears after conversion or import from raw data source.
The value is the minimum burst or delta altitude between three consecutive plots (horizontal than vertical scan).
For i.e, a-b-c, three consecutive horizontal altitudes (plots). If a and c are almost identical (+/- one meter) and if |b-a| > threshold, then b will be computed as mean between a and c.
 
8

Flatten

8. Flatten
Force all altitudes in selected map to be equal to the left value.
 
9

Footprint

9. Footprint
Will build the elevation layer using the terrain server selected on the left.
When CIGI is selected, the IG must be running and the CIGI setting must have been set prior to use this function.
See CIGI Design chapter.
 
10

Save

10.
Save the altered elevation terrain file (otherwise, alterations will be lost as they are not saved with the database)