38
COGO
38.1
Overview
COGO is an app to perform
co
ordinate
g
e
o
metry calculations such as
•
coordinates of points.
•
bearings between points.
•
distances between points.
The calculations can be made from
•
existing point data in the job, known distances or known azimuths.
•
manually measured points.
•
entered coordinates.
In contrast to hidden point measurements within the Measure app, COGO is
more of a calculation program than a measuring program.
If the working job has linked jobs, then the list of points available for the cal-
culations contains points from the working job and the linked jobs.
If the working job has no linked jobs, then the points from the working job will
be used.
Changing coordinates of a point which has been previously used in COGO does
not result in the point being recomputed.
The COGO calculation methods are:
•
Inverse
•
Bearing & distance
•
Intersection
•
Line and arc calculations
•
Object division
•
Shift, rotate & scale
•
Angle calculations
•
Horizontal curve
•
Triangle
Type
Description
Distances
The choices are
•
Ground
•
Grid
•
Ellipsoidal
Azimuths
The azimuths are grid azimuths relative to the local grid.
•
Point coding is available in the results panel after the COGO calculation.
Point coding of COGO points is identical to coding manually measured
points. Refer to "27 Coding" for information on coding.
•
For the COGO calculation shift, rotate & scale, the codes from the original
points are taken over for the calculated COGO points.
Description
Linked jobs and global
data
☞
COGO calculation
methods
Distances and azi-
muths
Coding of COGO
points
462
COGO
