Spectra Precision Survey Pro v4.5 Ranger Reference Manual - Manual (Page 369)

Cogo Menu
R-361
Offset Line
Cogo Offset Line .
The Offset Line screen is used to view, store a polyline, or store an
alignment that is at a specified perpendicular offset to an existing set
of points, a polyline, or an alignment.
Tap Line… : allows you to tap an existing
polyline or alignment that the offset will be
computed from.
To/From… : Opens the Point List screen (Page
R-443) where a point list can be created.
Offset: defines the offset distance and which
side the offset occurs. The right or left side is
referenced from the first point that defines the
specified line.
• View result only: allows you to view
the resulting line in the Map view
without saving anything.
• Save to job as an alignment: when checked, the computed
offset line will be saved as a new alignment under the name
specified in the Description field.
• Save to job as a Polyline: when checked, the computed
offset line will be saved as a new polyline under the name
specified in the Description field.
Note: Spiral curves cannot be generated in a new offset alignment. If
the original centerline contains any spiral curves, they will be treated
as straight sections in the offset alignment. The Offset Staking or
Offset Points routine should be used to stake offsets from a spiral.
Description: is the description that will be given to the new
alignment or polyline.
Solve : computes and optionally stores the new offset line.