Spectra Precision Survey Pro v3.80 Recon iPAQ User Manual - Manual (Page 126)

User’s Manual
118
When Hidden-line Removal is checked, all the lines that occur
behind other surfaces in the 3D View screen will be hidden.
The image shown here is identical to the image shown in the
screen above except the hidden lines are not removed.
When Display the Difference is checked, the elevations in the
3D View screen will be distorted so the reference DTM
becomes a flat surface. This will result in any staked points
that occur above or below the reference DTM to clearly stand
out as hills and valleys and the volume information provided
in the 3D View screen will be between the staked points and
the reference DTM.
When the Display the Difference checkbox is unchecked, the Datum
field can be set to a reference elevation. Cut and fill volumes in the
3D View screen will then be based on the difference of a horizontal
plane at the elevation specified here and the staked points.
The View Direction (from view point to the center) settings allow you
to specify the exact horizontal and vertical angle in which to view the
DTM surface.
18. Tap OK from the 3D View Setting screen to return to the 3D View
screen.
19. Tap &ORVH from the 3D View screen to return to the DTM Shot
screen. From there you can continue taking DTM stake shots.