FAQ: Why is the Add button disabled in the COGO Traverse tool?
Why is the Add button disabled in the COGO Traverse tool?
There are three possible reasons the Add button in the Traverse tool on the COGO toolbar is disabled.
A. The distance and direction units entered do not match the units specified in the Editor Options
The distance and direction units are based on what is set in the Editor Options menu. By default, the direction type is set to Polar coordinates with units of decimal degrees. However, if the directions entered in the Traverse tool are in a different format, such as bearings in units of degrees-minutes-seconds, the Add button is disabled.
To enable the Add button, modify the Editor settings by following the steps below:
- Click the Editor drop-down arrow on the Editor toolbar, and select Options.
- In the Editing Options window, select the Units tab.
- Change the Direction Type to Quadrant Bearing and the Direction Units to Degrees Minutes Seconds.
- Click Apply > OK.
B. Entering incorrect syntax for the direction value
When setting the bearing angles, ensure that hyphens are used to separate the degrees-minutes-seconds values, as opposed to using spaces. As an example, the correct notation for the direction, S 89° 45' 25" W, is S 89-45-25 W, instead of S 89 45 25 W, which is incorrect.
When specifying the quadrant that the bearing lies within, there are two syntax options:
- Type N, S, E, or W to denote North, South, East, and West respectively, for example, S 89-45-25 W indicates that the angle lies in the southwest direction.
- Type the number corresponding with the quadrant. The following numbers go in a counterclockwise direction, as shown in the image below
Additionally, when inserting direction values with 60 minutes, such as 89-60-00-3, it is incorrect because 60 minutes makes an hour (degree). Use 89-59-59-3 instead.
C. An existing line segment is not created prior to using either the Angle-Distance or Tangent Curve course types
When working with the Angle-Distance or Tangent-Curve course types, they both require an existing line segment to be present within the edit sketch to be calculated from. To create a straight line segment prior to using either of the course types when sketching a new traverse, usually, the initial course type used is Distance-Direction. For more information, refer to ArcGIS Help: About creating a line with the Traverse window.
- ArcGIS Help: Setting the direction type and units used when editing
- ArcGIS Help: An overview of COGO
- ArcGIS Help: About direction measuring systems and units
- Problem: The Create button is inactive on the COGO Construct 2-Point Line tool
- FAQ: Why is the Offset Line button on the COGO toolbar disabled?
- FAQ: What is the proper direction format for the Traverse Tool?
- ArcGIS Help: Being productive while entering values in the Traverse window