Define Line-relative Region dialog box
The Define Line-relative Region dialog box is used to create a line-relative region.
To display the Define Line-Relative Region dialog box:
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On the Echogram tools toolbar, click the Vertical band tool
or Horizontal band tool 
. -
Make a selection on the echogram.
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On the Shortcut menu (right-click), click Define Line-relative Region.
The settings are used to define the lines and offsets that will be used to create the region.
|
Settings |
Description |
|
Upper line |
Choose a line from the list to base the upper boundary of the region on. |
|
Offset |
If desired, enter a depth offset to be added to the upper line to create the upper boundary of the region. |
|
Lower line |
Choose a line from the list to base the lower boundary of the region on. |
|
Offset |
If desired, enter a depth offset to be added to the lower line to create the lower boundary of the region. Note: You can use the same line for the upper and lower line but offsets must result in the upper line being located above the lower line. |
- Click Define to create the region.
Click Cancel to return to the echogram without creating a region.
Notes:
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If you have used the Horizontal band tool, the region created will span the whole echogram.
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If you have used the Vertical band tool, the region will span the boundaries of the vertical selection.
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If there is a break in either of the lines, the region cannot be created and a message will appear. You can use the Line-break finding tool to find breaks in the line(s) and fix them prior to defining a line-relative region.