Use this tab to specify the survey network style component display in Plan (2D) and Model (3D) views. This is the standard Autodesk Civil 3D Display tab.
Survey Network Display components include:
- Known Control Points: a point symbol representing a known point in a survey network. All other unknown points are dependent on the location of a known point.
- Unknown Control Points: a point symbol representing a point in the survey network where the point location is calculated relative to an observation made to a known control point. An unknown control point may represent an instrument setup or an adjusted control point.
- Non-Control Points: a point symbol representing a point with its location determined from a reduced observation, for example a point created by the NE SS survey command. A non-control point is not connected to other survey observations and remains unaffected by network analysis, but it still a component of the survey network. A non-control point may be promoted to a control point if it is referenced by observations.
- Sideshot Points: a point symbol representing a sideshot point in the survey network with its location determined from an observation made from either a known or unknown point. In most cases a sideshot point is not connected to any other point in the network.
- Network Lines: a line representing observations that connect two control points.
- Direction Lines: a line representing observed direction data from either a known or unknown point in the survey network.
- Sideshot Lines: a line representing observations between a control point and a sideshot.
- Error Ellipses: this component represents the positional error of an unknown control point as a result of least squares analysis.
- Tolerance Error Points: this component represents an observed point where the observation(s) exceeds the tolerance error values specified in the Survey Database Settings.
- Tolerance Error Lines: this component represents the line of sight between the setup and the observed point that exceeds the tolerance error values that were specified in the Survey Database Settings.