New Editable Line dialog box

The New Editable Line dialog box is used to create a new editable line or overwrite an existing editable line.

To display the New Editable line dialog box:

  1. On the toolbar, click the Line draw tool Line edit tool, then click New then Editable Line.

    -OR-
  2. On the Shortcut menu (right-click) of the Dataflow window , click New then Editable Line.

Destination

The Destination section is used to name the new line.

Settings

Description

Create a new line

Select this option to enter a name for the new line or accept the default.

Overwrite existing line

Select this option to choose an existing line and replace it with the new line you are creating.

Select the Make this line active on current echogram check box to automatically set the new line as the active line. This is selected by default.

Source

The Source section is used to select the method that will be used to create the line.

Settings

Description

Existing line

Select this option to create the new line relative to an existing line.

Choose the line on which the new line will be based and select an offset method in the Offset section:

  • The Linear function method makes a translated copy of the existing line by multiplying the depth of the line by the Multiply depth by value then adding the Then add value.
     

  • The Off-axis angle makes a translated copy of the existing line by calculating the equivalent depth change for a specified change in off beam axis Angle. This calculation assumes a vertically oriented echosounder and a flat bottom. The transducer draft is taken from the specified Transducer. If the new line is based on a sounder-detected bottom then the transducer associated with that variable is used (another transducer cannot be selected). See About off-axis angle line offsets for a precise definition.

Fixed depth

Select this option to create a new line at a fixed depth on the echogram. Enter the desired depth in meters for the new line.

Line pick from the current variable

Select this option to create a line using the line picking algorithm set on the Line Pick page of the EV File Properties dialog box.

See Line picking and bottom detection.

None

Select this option to create a blank line that you can then draw on the echogram using the Line draw tool.

Line visibilty

This setting is only available when you create a new editable line. The subsequent management of line visibility on echograms is then handled through the Lines page of the Variable Properties dialog box on a variable by variable basis.

Settings

Description

Visible on all echograms

Select this option to make this line visible on all echograms.

Hidden on all echograms

Select this option to make this line hidden on all echograms.

Span gaps

Click Span gaps to ensure that your new line has no gaps in it. All gaps in the source line will be bridged with a line segment with a line status of Unverified.

See also

Creating, renaming and deleting lines
About lines
Line picking and bottom detection

Echoview Help file 5.1.25 for Echoview 5.1.45 Wednesday 1st  February 2012

Please report any errors or omissions to support@echoview.com.