About graphs

Echoview provides graphs for viewing detailed aspects of data.

Graph navigation

Graph

Availability

2D projections graphs

Available for a region or selection on a single target echogram. Graphed points are displayed in the single target color. The set includes:

  • Major-Axis Distance Vs. Minor-Axis Distance
  • Ping Number Vs. Major-Axis Distance
  • Major-Axis Distance Vs. Beam-Axis Distance
  • Ping Number Vs. Beam-Axis Distance

Notes:

  • Source data type: single targets.
  • A set of four graph windows can be opened, or you can choose to open an individual graph window at separate times.
  • Single target graphs allow you remove and add targets from fish track regions.

3D single target graph

Available for a region or selection on a single target echogram - single targets are displayed in 3D.

Source data type: single targets.

Angles graph

Available for a region or selection on a single target echogram. Graphed points are displayed in the single target color.

Source data type: single targets.

Note: Single target graphs allow you remove and add targets from fish track regions.

Beam graph

Available for a single beam on a single sector plot.

Source data type: acoustic multibeam data.

Bottom classification graph

Available for a Bottom points variable after a bottom classification. Bottom features may be specified for the X and Y axis. The color of a point represents an assigned bottom class.

Source data type: bottom points variable.

Frequency Distribution graph

Available for a region or selection on an echogram.

Source data type: acoustic single beam or single targets data or multibeam regions or selections.

Heading graph

Available for a heading variable.

Length graph

Available for a length variable.

Line graph

Available for a line variable. A line can represent sounder-detected bottom detections, a heave source line, altitude, bottom picks or combinations of line data.

Source data type: lines.

Major-axis beam compensation graph

Available for a region or selection on a single targets echogram.

Source data type: single targets.

Minor-axis beam compensation graph

Available for a region or selection on a single targets echogram.

Source data type: single targets.

Off-axis beam compensation graph

Available for a region or selection on a single targets echogram.

Source data type: single targets.

Ping graph

Available for a single ping or a set of pings contained in a selection made using the Vertical band selection tool.

Source data type: acoustic single beam Sv, TS, Angular position.

Note: The current velocity echogram ping graph displays Depth (meters) vs Current velocity (millimeters per second).

Pitch graph

Available for a pitch variable.

Source data type: pitch.

Roll graph

Available for a roll variable.

Source data type: roll.

Speed graph

Available for a speed variable.

Source data type: speed.

Target Length vs Depth graph

Available for a region or selection on a target length echogram.

Source data type: target length. This data type is output by a Target length conversion operator, where TS represents the target length (cm).

Graphed points are displayed in the single target color, where the echogram target TS is used to represent the target length (cm).

TS vs Depth graph

Available for a region or selection on a single target echogram. Single target TS values are displayed. Graphed points are displayed in the single target color.

Multiple variable graphs

 

Frequency Response graph

Available for a region or selection on a Sv echogram and displays NASC/NASC(ref) for specified multiple Sv variables.

Source data type: single beam Sv.

Relative mean dB graph

Available for a region or selection on a Sv or unspecified dB echogram. Displays the response from multiple variables.

Source data type: single beam Sv.

Threshold Response graph

Available for a region or selection on a Sv echogram. Displays the response from multiple variables.

Source data type: single beam Sv.

Wideband Frequency Response graph

Available for a selection or region on a pulse compressed wideband echogram. Displays the frequency spectrum of selected Sv or TS samples or single targets in multiple variables.

Source data type: pulse compressed wideband Sv, TS, single targets.

See also: Factors that can degrade the wideband frequency response.

See also

About Linking Graphs