Spectra Precision Survey Pro v4.6 Ranger User Manual - Manual (Page 109)

DTM Stakeout
99
4. The name entered in the Store Point field will be used for the first
point that is stored. Future points will be stored with the next
available point names. Enter the rod height in the HR field.
5. You have the option of selecting a
centerline to get offset and stationing
information for the staked points.
Checking the With C.L. checkbox and then
tapping the Choose Centerline button will
open the Select Line screen where you can
select an existing polyline or alignment
that defines a centerline. The selected line
will also be displayed graphically in the
DTM Shot screen, described later.
6. When the Generate DTM with Staked Points
checkbox is checked, a DTM surface will be generated from the
points stored on the selected DTM layer (not the reference DTM
layer optionally chosen in the first screen). Any points staked
and stored will also be added to this layer and the DTM will be
updated accordingly.
Selecting the Generate DTM with Staked Points option also allows
you to view this surface from the 3D View screen while taking
shots and it allows you to get live cut / fill and volume information
between this surface and the reference DTM surface selected in
the first screen. If unchecked, the 3D View is unavailable; no
volumes will be computed; and cut / fill information is not
displayed, but is still stored to the raw data file.
When you first check the Generate DTM
with Staked Points box, you must also tap
the Setup / View DTM… button. This will
open the Setup DTM 3D screen, which is
used to select your layers, and optionally
select any break lines, and a boundary.