Editing fish tracks

Fish track editing functions fall into two categories:

Before you begin

You should be familiar with the following details about fish track editing before completing any of the tasks described on this page:

You must select the Fish track tool to complete most fish track editing tasks. This tool is only available on the toolbar when a single target echogram is in focus.
If you are making a selection around fish track(s), the top mid-point of the right most single target in the required fish track(s) must be contained within the selection.
If you are making a selection around individual target(s), the top mid-point of the required target(s) must be contained within the selection.

Editing or deleting fish tracks within a selection

Delete multiple fish tracks

To delete multiple fish tracks:

Click the Fish track tool (if not already selected).
Make a rectangular selection that includes the tracks you wish to delete.
1. On the Shortcut menu (right-click), click Delete fish tracks.
  - OR -
  Press CTRL+X.
  
  All fish track regions for which the right most (latest) point is within the selection are deleted.

Note: If you delete fish track(s) by mistake, you can restore them by clicking the Undo button, or pressing CTRL+Z.

Merge the fish tracks in a selection

To merge two or more fish tracks:

Click the Fish track tool (if not already selected).
Make a rectangular selection that includes the fish tracks you wish to merge.
On the Shortcut menu (right-click), click Merge fish tracks.
- OR -
Press the M key.

Create a fish track from a selection of targets

To create a fish track from a selection of single targets:

Click the Fish track tool (if not already selected).
Make a rectangular selection that includes the targets.
On the Shortcut menu (right-click), click Create fish track from targets.

Editing or deleting a single fish track

Add a target to a fish track

To add one target to a selected fish track:

Click the Fish track tool (if not already selected).
Select a fish track.
Note: The selected fish track will be displayed with a thicker region border.
Right-click on the target you wish to add to the select fish track.
On the Shortcut (right-click) menu, click Add target.

Add a selection of targets to a fish track

To add more than one target to a fish track at the same time:

Click the Fish track tool (if not already selected).
Select a fish track.
Note: The selected fish track will be displayed with a thicker region border.
Draw a rectangular selection around the targets you want to add to the selected track.
On the Shortcut (right-click) menu, click Add targets to fish track.
- OR -
Press the G key.

Remove a target from a fish track

To remove a target from a fish track:

Click the Fish track tool (if not already selected).
Select a fish track.
Move the mouse pointer over the target you wish to remove.
On the Shortcut (right-click) menu, click Remove target.

Remove a selection of targets from a fish track

To remove a series of targets from a fish track:

Click the Fish track tool (if not already selected).
Select a fish track.
Draw a rectangular selection around the targets you wish to remove from the track.
On the Shortcut (right-click) menu, click Remove targets from fish track
- OR -
Press the H key.

Delete a single fish track

To delete a single fish track:

Select a fish track.
On the Shortcut (right-click) menu, click Delete Region.
- OR -
Press DELETE.

Merge a fish track with another fish track

To merge two fish tracks:

Click the Fish track tool (if not already selected).
Select a fish track.
Move the mouse pointer over the fish track you wish to merge with the selected fish track.
On the Shortcut (right-click) menu, click Merge fish tracks
- OR -
Press theM key.
Note: This option is only available if a single fish track region can be identified. If you right-click on overlapping regions, the option will not be displayed.

Note: It is also possible to merge two fish tracks by drawing a selection around them, and on the Shortcut menu (right-click) clicking Merge fish tracks.

Split a fish track into two fish tracks

To split a fish track:

Click the Fish track tool (if not already selected).
Select the fish track you wish to split.
Move the mouse pointer over the point at which you wish to split the fish track.
On the Shortcut (right-click) menu, click Split fish track.

The first fish track will contain all targets before the splitting point, the second track will contain all targets beyond the splitting point.

Convert a region into a fish track region

If you have regions defined on your single target echogram that are not fish track regions (that is, they are marker, analysis or bad data regions) it is possible to convert them to fish track regions as long as they only have one target per ping within each ping in the region.

To convert a region to a fish track:

Click the Fish track tool (if not already selected).
Select the region you wish to convert to a fish track.
On the Shortcut (right-click) menu, click Convert to fish track.