2D projections graph

The 2D projections graph windows are available for single target echograms and shows four graphs (from top left to bottom right):

Note: Alternatively, any individual 2D projection graph may be opened.

To view the 2D projections graph window for a selection:

  1. Make a selection.
  2. On the Shortcut (right-click) menu, click Graph Selection, 2D projections or the name of a specific 2D projection graph.

To view the 2D projections graph window for a region:

  1. Select a region.
  2. On the Shortcut (right-click) menu, click Graph Selection, 2D projections or the name of a specific 2D projection graph.

Notes:

  • You can edit a fish track from a 2D projection graph.
  • It is possible to view more than one graph window at a time. Graph windows automatically open to the same size and placement of the most recently opened graph window, so multiple graphs will be placed on top of each other on the screen. You may need to move the top window to see the one underneath.
  • Linking this graph to an extending selection, could cause performance problems.

Legend

  • Each target is displayed as a dot in the same color with which it is displayed on the single targets echogram. That is, the color conveys the target strength of the target according the selected color scheme.
  • Fish tracks are displayed by connecting single target dots with a line of the same color as the region which defines the track on the underlying single targets echogram. These are randomly assigned.
  • The first target in a fish track is displayed as a triangle pointing upwards.
  • The last target in a fish track is displayed as a triangle pointing downwards.
  • All distances are measured in meters from the center of the beam (minor-axis and major-axis distances) or the transducer face (beam-axis distance).

Edit a fish track

Edit a fish track on a graph.

See also

Single targets angles graph
3D single targets graph
Single target TS vs depth graph
Major-axis beam compensation graph
Minor-axis beam compensation graph
About single target ranges
About linking graphs
About beam geometry
About transducer geometry