ET Traverse Dialog

• Start Point panel
  • displays the coordinates of the Start Point of the current traverse 
  • Set start point tool allows setting the start point interactively by clicking on the map (snapping supported)
  • Set/Edit coordinates button allows setting the start point by entering its coordinates
• End Point panel - Displays the coordinates of the end point of the last course added to the traverse
• Action panel - Indicates what action will be performed when pressing the Finish button.
  • ADD - the traverse will be added as a new feature to the Target layer
  • EDIT - the traverse will replace an existing feature. This action is available only if the current traverse was generated from an existing feature using the Get traverse tool . Use the Toggle Action tool to change the action from EDIT to ADD. 
• Finish button - Stores the current traverse as a feature in the Target layer set in the Editor.

This tab has two main purposes:

1. Adjusting the settings for all ET COGO tools

• the Direction type
• the Direction units
• Linear and angular precision (the number of digits after the decimal point to be used when storing linear or angular values)

These settings will be applied when using any of the ET COGO tools. More about Direction type and Direction units.

2. Adding new courses to a traverse.

See "How to use ET Traverse" topic

• Add or Subtract 90 degrees from the current direction. This tools allow creating a course at a right angle to the previous course
• Get direction from feature tool allows getting the direction of an existing feature.
• In the Linear Units panel, the user can adjust the units to be used as input. The units of the spatial reference of the edited dataset are displayed. In the input box the user can enter the distance in Meters. The course length however will be calculated in Feet because the spatial reference of the edited dataset uses Feet.

Displays a description for each course of the current Traverse. The direction values are recorded in the linear units of the spatial reference of the currently edited dataset. 

The user can select a course by clicking on its description.

This tab has several tools for manipulating a traverse. 

See also "How to use ET Traverse" topic

• Delete Selected Course . The same can be done by pressing  the "Del" key
• Edit Selected Course . The tool opens a dialog populated with the parameters of the selected course. The values can be adjusted in order to modify the course. A double click on a course has the same action. If edit a course the input values must be in the units of the spatial reference of the target dataset.
• Get the traverse of an existing feature . The user can select with this tool any feature of the target layer. The traverse table will be populated with the courses of the selected feature. Note: The current direction type, direction units and precision will be used in the courses descriptions.
• Import Traverse . Imports a traverse from a text file. See file format for details.
• Export Traverse . Exports current traverse to a text file. See file format for details.
• Toggle Action . The standard action when using the Select feature - Get traverse tool is EDIT. If one or more courses of the traverse are edited, pressing the Finish button will replace the feature which was selected with the modified traverse. The Toggle Action button changes the action to ADD - the modified traverse will be saved as a new feature
• Zoom to traverse . Zooms to the current traverse
• Reset - . Clears the traverse table

The fields of the attribute table of the Target layer set in the Editor are populated in the box. The user can enter the values to be stored  for the feature that will be created with current traverse.

If  Get traverse tool is used. The values of the attributes of the selected feature are populated and can be modified.

Subtypes and Domains are supported.

On this tab you can calculate the Misclosure of the current traverse and adjust the traverse using the compass rule to close it. The adjustment can be done only if the end point of the traverse is known (Closed Traverse). There are two types of closed traverses:

• Loop Traverse - the start and end point of the traverse is the same. Traverses representing polygons or closed polylines.
• Link Traverse - the start and end points of the traverse are different.

1. If the traverse is Loop, the X and Y values are populated automatically. If you have a Link traverse, you need to enter the X and Y coordinates of the end point of the traverse in order to be able to calculate the Misclosure and Adjust the traverse.

2. Click Calculate Misclosure: the Misclosure will be reported in the units of the dataset and  relative to the length of the traverse.

3. Click Adjust: The traverse will be adjusted using the Compass rule (also known as Bowditch rule). This rule applies a proportional adjustment,  the distances between the stations are used in proportion to the total distance of the traverse. The result of the adjustment will be displayed as a graphic on the view.

4. If the results of the adjustment are acceptable, click Accept button. The adjusted traverse will be populated in the View/Edit Traverse tab. 

5. Click the Finish button to add the traverse as a feature in the edited dataset.