Spectra Precision Survey Pro v4.6 Ranger User Manual - Manual (Page 110)

User’s Manual – Conventional Mode
100
Select Your Layers
7. Tap Layers… from the Setup DTM 3D screen to open the Layers
(Stake DTM) screen.
a. Select the layer that you want to use
for the stake points and other objects
that exist on the surface you are
staking. These points will be used to
generate a DTM surface to compare to
the reference DTM surface.
b. Check the Select Auxiliary Layer
checkbox to automatically store any
points or break lines to the layer
selected from the corresponding
dropdown list that cannot be used for
DTM generation. Examples of invalid
objects would include a polyline that extends outside a
boundary, or a point with identical coordinates to another
point, but with a different elevation. Leaving this box
unchecked will result in a prompt to select a layer prior to
storing an invalid object.
c. Tap when finished to return to the Setup DTM 3D screen.
Select a Boundary (optional)
You can optionally define a boundary using a closed polyline for the
points that are staked, which will limit the computation of the DTM
surface within the selected boundary.
A valid polyline must be closed, and the line must not cross over
itself, such as in a figure-eight.
8. To select a boundary, tap the Boundary… button, which will
open the Choose Polyline screen.