Creating an Observation by Deflection Angle and Distance
 
 
 
Bottom of the Page

Use the deflection distance (DD) command to quickly create a point using a deflection angle and distance from an established line.

The term deflection angle refers to the angular direction turned from the extension of the previous course. Additionally, you can also use a vertical angle or vertical distance to locate the point.

Procedure
Creating an Observation by Deflection Angle and Distance
Quick Reference

Survey Command Window Syntax

DD (point) [angle] [distance] (description)

or

DD VA (point) [angle] [distance] [vertical angle] (description)

or

DD VD (point) [angle] [distance] [vertical distance] (description)

Parameter Definition
point The point identifier of the new point. You do not need to assign a point number if auto point numbering is on.
angle The deflection angle as measured to the point. Type this value in the current angular units (DMS, grads, decimal degrees, radians, or mils).
distance The distance from the instrument point to the point being located. It is measured in the current units unless otherwise specified. The distance is assumed to be a horizontal distance unless VA is used. When VA is used, the distance is recognized as a slope distance.
vertical angle The direction of the vertical angle (zenith, horizontal, or nadir). Type this value in the current angular units (DMS, grads, decimal degrees, mils, or radians).
vertical distance The elevation difference from the instrument to the prism. If the prism is higher than the instrument, then this is a positive value.
description An optional description associated with the point.