Target length vs. depth graph

For a target length variable, the Target Length vs. Depth graph shows a scatter plot of the estimated target length against depth.

Warning:    Depth is plotted using Target_on_axis_depth not Target_true_depth.

To display a Target length vs. Depth graph for a selection:

  1. Make a selection.

  2. On the Shortcut (right-click) menu, point to Graph Selection, and then click Length vs. Depth.

To display a Target Length vs. Depth graph for a region:

  1. Select an existing region or define a new region.

    Note:
    If you wish to graph a bad data region, you must clear the Exclude bad regions option on the Analysis page of the Variable Properties dialog box.
     

  2. On the Shortcut (right-click) menu, point to Graph Region and then click Length vs. Depth.

Legend

Each single target is displayed as a + symbol at the relevant Target Length/Depth coordinate.

Notes:

  • Displayed Target Length vs Depth graphs will be recalculated and redisplayed if settings that affect the data are changed.
  • These graphs will update with changes in Echogram mode, and Transducer and Platform Properties.

See also

About Linking Graphs
Target length calculator operator
About target properties