ETCOGOTraverseFileFormat

COGO Traverse File Format

The format of the text files that are exported by ET Traverse tool and that can be imported in the ET Traverse tool is the same as the standard ESRI traverse file format. The only difference is that ET Traverse tool does not support Radial and Tangent directions of curves (only Chord direction is supported.

Note: Since the standard ESRI traverse tool (ArcEditor and ArcInfo only) does not support creation of straight segments using dX & dY and X & Y, such courses created with the ET Traverse tool are converted to Direction - Distance courses when exporting to a traverse file.

Sample of traverse file

DT P
DU DD
SP -2277906.7 348745.61
DD 315.0000 100
AD 45 50
NC C 100 D 60 C 45.0000 L
TC C 66 D 23.5 R

DT	Direction Type P - Polar NA - North Azimuth SA - South Azimuth QB - Quadrant Bearing Example: DT P
DU	Direction Units DD - Decimal Degrees DMS - Degrees Minutes Seconds Rad - Radians Grad - Gradians or Gons Example: DU DD
SP	Start Point Example: SP -2277906.7 348745.61
DD	Straight course Direction - Distance Example: DD 315.0000 100
AD	Straight course Angle - Distance. Cannot be the first course of a traverse Example: AD 45 50
NC	Non-tangent curve Token 2: D - Central angle of the curve A - The length of the Arc C - Chord length R - Radius of the curve Token 3: The value for the above Token 4: D - Central angle of the curve A - The length of the Arc C - Chord length R - Radius of the curve Token 5: The value for the above Token 6: C - Chord direction Token 7: The value for the above Token 8: Direction of the curve L - Left R - Right Example: NC C 100 D 60 C 45.0000 L
TC	Tangent Curve - Cannot be the first course of a traverse Token 2: D - Central angle of the curve A - The length of the Arc C - Chord length R - Radius of the curve Token 3: The value for the above Token 4: D - Central angle of the curve A - The length of the Arc C - Chord length R - Radius of the curve Token 5: The value for the above Token 6: Direction of the curve L - Left R - Right Example: TC C 66 D 23.5 R