39.4.2 Computing Required Azimuth
Available for:
•
One P
oin
t Localisation method with Onestep or Twostep transformation.
•
Method: Two WGS84 points and Method: User entered in Determine
Rotation.
Allows two local points to be chosen from local job between which the
requir
ed azimuth is computed. This azimuth is then used with an azimuth com-
puted between two WGS 1984 points chosen from the WGS84 job to calculate
the rotation of the transformation.
The computed required azimuth appears in the Required azimuth field for
Method: Two WGS84 points and the Rotation field for Method: User
entered in Determine Rotation.
Press Inverse in Determin
e Rotation.
Key Description
OK To calculate the required azimuth and return to the panel
fr
om where this panel was accessed.
Description of fields
Field Option Description
From Selectable list The point ID of the first known point for the
azimuth calcula
tion.
To Selectable list The point ID of the second known point for
the azimuth calculation.
Azimuth Display only The calculated azimuth.
Next step
OK re
turns to Determine Rotation.
39.4.3 Computing the Grid Scale Factor
For One Step Localisation method with Twostep transformation. Calculates the
grid s
cale factor. The grid scale factor is the scale factor of the point chosen,
relative to the projection being used.
Description
Access
Compute Reqrd Azi-
muth
Description
552 Determine Coordinate System
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