Group

Property

Description

General

Name

The name of the layer that will contain the new line. Select from the list.

This can be the same as the source layer.

Input

Source

The name of the layer that contains the baseline. Select from the list.

Output

Lines

The feature acronym and attributes of the output line. Type an acronym directly or select an option from the list.

The list contains the following options:

• A list of recent objects, if any: Select this to reuse a previous object.

• Template: Select this to define the feature acronym and attributes using a predefined template. This will launch the Select Template dialog box, from which you select a template, if any are available.

• Objects: Select this to launch the Select Object dialog box from which you can manually select an acronym and define the attribute values.

Report

Create Report

Select this option to generate a report of the start and end points of each arc along with the contributing points.

Location

The location in which to create the report file. By default, the report is saved in the folder:

This can be changed by clicking the Browse button (...) and selecting a new location. This location will be remembered the next time the tool is launched.

Name

The name to assign to the report.

Advanced Options

Calculation Method

Select from:

• Normal Points: Use this if the baseline is formed of normal baseline points. The data is always interpreted as points, even if you select a line. In this case, only the vertices of the lines will be considered.

• Straight Lines: Use this if the baseline is represented by straight lines. The line data is always interpreted as connected geodesics. The geodesic segments between the turning points of the baseline as well as these turning points are used in the calculation.

Seaward Direction

The direction from the baseline where the arcs are to be drawn. Select from north, south, east or west.

Construction Lines

Draw the construction lines joining the end points of arcs on the limit line to their contributing points on the baseline.

Type an acronym directly or select from the list.

The list contains the following options:

• A list of recent objects, if any: Select this to reuse a previous object.

• Template: Select a template using the Select Template dialog box.

• Objects: Define the feature acronym and attributes using the Select Object dialog box.

Contributing Points

Draw the contributing points using a specific object acronym representation.

Type an acronym directly or select an option from the list.

The list contains the following options:

• A list of recent objects, if any: Select this to reuse a previous object.

• Template: Select a template using the Select Template dialog box.

• Objects: Define the feature acronym and attributes using the Select Object dialog box.

Limit

The geodetic distance of the limit being calculated from its baseline. Units are taken from the Distance setting in the Display Units Options tab.

Interpolation Interval

The interval between points on the output line. Type a value.

When the value is 0, the interpolation interval value along the arc is automatically calculated as follows:

• Up to 57 nautical miles: ~1/60th of the value of the limit distance

• At and beyond 57 nautical miles: 1 nautical mile