Notes page

The Notes page of the Variable Properties dialog box displays information about the variable.

General details

Some or all of the following details may be displayed:

Settings

Description

Variable name

The unique name of the variable. You can change the name of raw variables and virtual variables with this setting. Echoview can assign a default name when a variable is created or when Reset is used.

Notes:

  • In Echoview, name-uniqueness affects platforms, transducers, surfaces, scenes, region class, 3D curtains, 3D regions, lines, sticky notes, raw variables and unavailable variables. Existing EV files, that contain objects with the same name, will open and affected objects will be assigned a unique name.
  • Valid names for variables and dataflow objects consist of supported characters. These can include text and symbol character encoding and international characters. Commas, double quotes, the vertical bar and the Tab key press are unsupported characters. Where a name is used as the basis of an export file name, any unsupported file name characters are automatically removed.

Reset

Resets the name to the name generated when data files are added or to the default name generated for a new virtual variable.

Data type

The data type of the variable

Notes

A text box in which you can enter extra information about this variable.

Notes about the configuration of a bottom classification are added by Echoview when Classify Bottom is completed.

Operator statistics

This section is available for some (not all) virtual variables, as follows:

Scan position

The operator statistics reported include:

  • The number of possible frames identified.
    These are the frames that will be detected if an instrument scanning school detection algorithm is applied to the variable which was specified as Operand 2.
  • For each frame identified:
    • the ping numbers of the first ping and last ping of the frame
    • the mean distance each ping (in a frame) is moved by this operator 
    • the standard deviation of the distance each ping (in a frame) is moved by this operator
  • The number of possible target-locked ping pairs identified.
    These are the target-locked pings that will be detected if the target-locked school detection algorithm is applied to the variable which was specified as Operand 2.
  • For all target-locked ping pairs calculate:
    • the mean distance each ping (of all target-locked ping pair sets) is moved by this operator;
    • the standard deviation of the distance each ping (of all target-locked ping pair sets) is moved by this operator
  • For each set of target-locked ping pairs identified:
    • the ping numbers in both Operand 2 and the Target-locked variable specified on the Data page of the Variable Properties dialog box for Operand 2 in the following format:

      pings (first) - (last) are locked (x)

      where:
          (first identifies the first target-locked ping pair in the set in the format (a, b)
        (last identifies the last target-locked ping pair in the set in the format (a, b)
        (a,b identifies a target-locked ping pair, with
      a
      being the number of the ping in Operand 2 and
      b
      the number of the ping in the Target-locked variable.
        (x) is either simultaneous or alternate to indicate the way in which the pings were locked. See Target-locked scanning.
        and all of the ping pairs between (first) and (last) were identified as target locked.

See also

About raw variables
About virtual variables
Variable Properties dialog box