Spectra Precision Survey Pro v3.80 Recon iPAQ User Manual - Manual (Page 62)

User’s Manual
54
2D / 3D Points
Survey Pro allows a job to contain 3D points as well as
2D points. Since a 2D point has no elevation associated
with it, care should be taken when working with a job
that contains any 2D points, especially if you still want
to collect 3D points.
If you occupy a point that has no elevation, all the points
that are collected from that setup will also have no
elevations. Similarly, if you occupy a 2D point and
perform stake out, no vertical data is provided.
You can quickly see if there are any 2D points in the
current job by opening the
 -RE , (GLW 3RLQWV screen.
Any point where the elevation is shown as “ --- ” is a 2D
point.
Polylines
Lines can be added to your project that can represent anything such
as a roadway, a building, or a lot boundary. These lines are referred
to as polylines. Polylines can be compared to the point lists used in
other TDS data collection software. They can consist of several
individual curved and straight sections. A point must be stored in the
project for all the locations on the polyline where a new section begins
and ends.
Polylines can be used to compute information such as the perimeter
and area for a lot boundary. They can also make it easier to compute
and store offset points for the sides of a roadway when a polyline
exists that defines a roadway centerline.
Refer to the Reference Manual for information on all the screens that
are used to create and edit polylines.