About the Dataflow window

To display the Dataflow window, do one of the following:

The Dataflow window is used to manage all variables, geometry related objects, scenes and created/detected/imported 3D objects. The window displays relationships between transducers and the platform, their inputs and outputs, as well as the data flow relationships between raw acoustic and virtual variables and objects. Multiple custom views can be designed to display your choice of objects and their relationships. General, Analysis, Grid and Note details are displayed in the Details dialog box for objects under the mouse pointer.

 

This topic has the following sections:

Using the Dataflow window

You can arrange variables and objects on the window by selecting, dragging and dropping them as required. Context sensitive drag and drop arrows can change operands, transducers and Platform Position source.

Use the Rectangular selection tool to:

Select an object

Select multiple objects

Use the Objects List pane to select the desired objects within a dataflow view.

You can also print the displayed contents of the Dataflow window, to one page.

Some Variable Properties settings may be changed for (selected) multiple variables.

Editing

Objects and variables highlight when you point to them. Variables and lines can display a node - this indicates it can be used as an input for an object or another variable.

When you drag an arrow from an object, all available objects appear solid and surrounded by a halo, unavailable objects appear semi-transparent.

To change input operands :

Note: The drag and drop method replaces the first operand in the target variable.

Copy and Paste

Select one or more objects and use the Shortcut menu to Copy (CTRL+C) and Paste the objects into the current or another EV file.

Copy copies the selected dataflow objects to the Clipboard.  

The Paste feature is Dataflow View sensitive. On the view where the objects were selected, this action creates a copy of the selected dataflow objects (from the Clipboard) unless they are raw objects. The copy is named Object name (N+1) by default. On any other view, this action reveals the selected dataflow object (from the Clipboard).

The originating view offers:

Shortcut menu > Paste (CRTL+V)

Creates a copy of the objects from the Clipboard.

The Paste view (if it is not the same as the originating view) offers:

Shortcut menu > Paste (CTRL+V)

Shows the copied objects in the current view.

Note: This is the actual object, not a copy, and the Undo action is unavailable if you Delete it.

Shortcut menu > Paste a Copy

Makes a copy of the object from the Clipboard and makes them visible on the view.

After a Copy-and-Paste, the object or the first object in a virtual chain loses its input operands and loses its Calibration Source. To set input operands drag an arrow from an available variable to the affected variable or use the Operands page of the Variable Properties dialog box.

The following can also occur:

Cut (to Clipboard) may also be available from the Shortcut menu.

Grouping

Multiple objects in a view can be grouped together, groups can be collapsed or expanded, and objects can be added to or removed from groups using the Grouping sub menu available from the Shortcut (right-click) menu.

Group

Creates a group from the selected objects; a color window will open for selecting a color to identify the group and group objects with. Group objects are shown inside a colored rectangle.

Notes:

Grouping Option

Description

Collapse

Collapses the group objects and replaces them with a single group rectangle displayed in the group color, with the group name.

Note: A red inner border indicates that one or more of the objects within the group uses LocalCal settings.

Expand

Expands the group to show all objects in the group.

Ungroup

Ungroups the objects in a selected group, or removes a selected object from within an expanded group.

Group Properties

Opens the Group Properties dialog box where you can change the name and color used for the group and record Notes.

Menu items

You can perform certain tasks from the Dataflow window using the following commands on the Dataflow menu and/or Shortcut (right click) menu.

Menu item

Description

New

A sub menu from which you can create a new dataflow object. The following may appear:

Notes:

Delete

Delete the selected object(s) from the EV file. There is no undo for this option.

Notes:

  • You cannot delete raw variables.
  • Virtual variables in a chain can have their Operands set to None, when you delete an upstream virtual variable.

Tip: If you wish to remove the object from the current view only - use the Hide command.

Delete All Virtual Variables

Delete all virtual variables (visible and unavailable) from the EV File.

Note: This option is only available on the Dataflow menu.

Rename

Renames the object. The Reset button on the Notes page of the Variable Properties dialog box can be used to reset to the default name.

Cut

Cuts selected dataflow objects (to the Clipboard), ready for a Paste or Paste a Copy. The availability of Cut is dataflow object sensitive.

Note: Transducers that are used by variables are not cut, but are copied.

Copy

Copies the selected dataflow objects to the Clipboard.  

Refer to Copy and Paste for more information.

Paste

This action is View sensitive. It can create a copy of the selected dataflow objects (from the Clipboard) or reveal the selected dataflow object (from the Clipboard).

Refer to Copy and Paste for more information.

Paste a Copy

Available in views other than the one where the objects were selected. Creates a copy of the selected dataflow objects (from the Clipboard) unless they are raw objects.

Refer to Copy and Paste for more information.

Echogram

Displays an echogram of the selected variable. This is the same as double-clicking the variable.

Note: This option is only available on the Shortcut menu.

4D

Displays a 4D window for the selected variable. For more information refer to 4D window.

Note: This option is only available on the Shortcut menu.

Export

 

Export is available from a dataflow object's Shortcut menu. Export options for acoustic variables and other objects are displayed. A limited range of Export options is available using the Dataflow window Shortcut menu.

Export option

Description

Data Values

This context-sensitive feature accesses available Echogram menu > Export options for the object or exports data values for the object.

See also: Exporting data and Exporting analyses.

Complex Data Values

Export complex data for a ping subset of the specified variable.

Settings

Exports to a text file all the Variable Properties dialog box settings and their values.

3D 0bject

This export type is available for these objects:

  • 3D curtains
  • 3D single target groups
  • 3D fish track groups
  • 3D raster images
  • 3D region track groups
  • 3D polyline groups
  • Model objects
  • Scenes
  • Surfaces

To Echoview Data File Format

Exports to an EVD data file.

To HAC Format

Exports to a HAC data file.

To QPS SD Format

Exports to a QPS SD data file.

 

Reclassify Bottom

Reclassify Bottom is available from a bottom points variable's Shortcut menu. This feature reuses the settings and extracted features of the variable and reruns a Classify Bottom k-Means calculation. The k-Means calculations begin with a random initialization and finish with a clustered output. The result may be different for each k-Means recalculation. For more information refer to Bottom classification algorithm.

Note: Reclassify bottom deletes any new or renamed classes.

Cruise track

Displays a cruise track of the selected variable. For position variable this is the same as double-clicking the variable, for acoustic variables it will display an along-track display.

Note: This option is only available on the Shortcut menu.

Graph

Displays a graph of a selected applicable variable. This is the same as double-clicking the variable.

Variables that are displayed as graphs are:

Note: This option is only available on the Shortcut menu.

Reset Statistics

Clears the Generation statistic for the selected variable. Pings are generated in Echoview on demand; for example, when an echogram is displayed or data is exported.

The Generations statistic appears in the Details dialog box for objects that display echograms.

The statistic can be used to set the ping cache limits in order to optimize processing performance.

Note: If the Generations value does not increase each time you open the variable, then all pings for that variable are being cached. On the Performance page of the Echoview Configuration dialog box a cache setting and cache information are available.

Layout

Automatically arranges the icons in current view of the Dataflow window. Any manual changes you have previously made to the layout will be lost when you use this command.

Zoom In

Zoom in a fixed amount.

Zoom Out

Zoom out a fixed amount.

Unzoom

Unzoom.

Select All

Select all objects in the current view.

Select

Select an object type in the current view using the Select list.

Objects List

Opens the Objects List panel within the Dataflow window. The panel is View sensitive and lists all the objects in a view. Object name filtering and object selection on the panel quickly locates dataflow objects within the view. Use the mouse together with SHIFT or CTRL to make selections on this panel.

Commonly used Dataflow window features, like Properties, are easily accessible to listed objects via a Shortcut menu.

To clear filtering highlights or selections in the view, delete the search text or press ESC

Note: Variables within a collapsed group are not shown in the Objects list.

Show

Opens the Show In View dialog box to select additional objects to show in the current view.

Other settings that can affect Show or Hide:

Shortcut menu > View menu > View Properties has:

  • a Show new objects on this view section that manages (the visibility of) new objects
  • a When existing objects change availability section that manages (the visibility of) existing objects

Note: When a View does not display desired variable(s), the quick way to show them is to Copy them from another view and in the required view use Shortcut menu > Paste. See Copy and Paste for more information.

Hide

Hides the selected object(s) from the current view.

Other settings that can affect Show or Hide:

Shortcut menu > View menu > View Properties has:

  • a Show new objects on this view section that manages (the visibility of) new objects
  • a When existing objects change availability section that manages (the visibility of) existing objects

View

Views can be customized using the View sub menu.

On the sub menu, View Properties has:

  • a Show new objects on this view section that manages (the visibility of) new objects
  • a When existing objects change availability section that manages (the visibility of) existing objects

Other settings that can Show or Hide selected objects:

  • Shortcut menu > Show
  • Shortcut menu > Hide

See Views below.

Grouping

This option is available on the Shortcut menu for grouping multiple objects together in the active view. See Grouping below.

Lock Details

Lock/Unlock the display of the Details dialog box. Shortcut menu > Lock Details (CTRL+K)

Variable Properties

Displays Variable Properties dialog box for a selected variable.

Line Properties

Displays Line Properties dialog box for a selected line.

Transducer Properties

Displays Transducer Properties dialog box for a selected transducer.

Platform Properties

Displays Platform Properties dialog box for a selected platform.

Notes:

Sticky Notes

A Sticky Note allows you to add annotations to the Dataflow window. Sticky Notes may be placed anywhere on the Dataflow window and the background color may be specified. An empty Sticky Note will display the note name. Sticky Notes are copied by templates.

To create a Sticky Note, on the Dataflow window use the Shortcut menu (right-click), New, Sticky Note.

Navigation

Pan

To pan across the Dataflow window:

- OR -

- OR -

Note: While you are using the Pan tool but are not actively panning, you can right-click to select an object under the mouse pointer and gain access to the Shortcut menu.

Zoom

To zoom in the Dataflow window:

- OR -

Tip: To make all objects fit (visibly) in the window, click the mouse wheel. To return to the previous zoom level click the mouse wheel again. The position of the mouse pointer for the second click will center the window about that position.

Views

Multiple custom views can be created in the Dataflow window to suit your display purposes. Defined views are made available by clicking the View tabs, located at the bottom of the Dataflow window.

To manage and create views, use the View sub menu available from the Shortcut (right-click) menu.

To rearrange the order of the View tabs, click on a View tab then click + drag that tab to a new position.

To add new objects to the view use Show on the Shortcut (right-click) menu.

Use the Objects List pane to locate objects within a dataflow view.

View Option

Description

New View

Creates a new, blank view window; a new tab will appear at the bottom of the window.

New from selected

Creates a new view with the objects that are selected.

Delete View

Deletes the current view.

Layout

Automatically rearranges the icons in the current view.  Any manual changes you have previously made to the layout will be lost when you use this command. There is no undo for this option.

View Properties

Opens the View Properties dialog box where you can change the name, the scheme for object color and shape, the data relationship displayed between objects, and the type of new objects to add to this view automatically.

Under View Properties:

  • a Show new objects on this view section manages (the visibility of) new objects
  • a When existing objects change availability section manages (the visibility of) existing objects

Note: Pre-set views in EV files saved in Echoview 4.30 or earlier are reproduced as they were saved (with small differences), on the condition that you used the views. Views that were never used will not be replicated accurately.

Colors and shapes in the Dataflow window

Arrows

When Standard is chosen for the Relationship type setting on the View Properties dialog box, the annotated black and orange arrows indicate the relationship between objects.

When Line and surface usage is chosen for the Relationship type setting on the View Properties dialog box, relationships between variables, lines and surfaces are shown with annotated black arrows.

Annotation

Relationship type

n

Indicates the operand n. Where n is an integer.

T

Transducer

An arrow between a Transducer and virtual variable is shown when the Transducer is different from the first operand's transducer. The transducer for any particular variable

is selected on the Calibration page of the Variable Properties dialog box.

D

Arrow comes from a distance variable.

H

Arrow comes from a heading variable.

P

Arrow comes from a position variable.

V

Arrow comes from a heave variable.

U

Line used as the Exclude above line.

Surface used as the Exclude above surface.

L

Line used as the Exclude below line.

Surface used as the Exclude below surface.

G

Line used as line for Show depth/range/line-referenced grid on the Grid page of the Variable Properties dialog box.

S

Arrow comes from the acoustic variable that is specified as the Line source for line recalculation.

A

Line is the Active line in the echogram.

Surface is the Active surface in the echogram.

Note: After changes to the active line, the Line and surface usage view may need to be refreshed manually by using the View Properties dialog box again.

Objects

The following shapes are used to distinguish different objects within the Dataflow window:

Symbol

Object type

Drag and drop node

 
Drag and drop node

A drag and drop arrow node appears on a dataflow object under the mouse pointer.  

Left click and drag the node's arrow onto a destination object. Suitable destination objects are displayed with a bright halo.

Use drag and drop to specify: input variables for operators, a Platform's Position source, or an object's Transducer.

Geometry icons

shape for platform

Platform

shape for transducer

Transducer

Object icons

Surface object

Surface object

Virtual surface object

Virtual Surface object

Scene object

Scene object

3D curtain object

3D Single beam ping curtain object

3D Multibeam ping curtain object

3D Single Targets object

3D Single targets group object

3D Fish Tracks object

3D Fish tracks group object

3D REgion Track gropu object

3D Region Track group object

3D Region Class

3D Regions/3D Region Class object

Note: The Unclassified regions Region Class object must be selected for display, otherwise it is not shown.

3D Polyline

3D Polyline group object

Model_object

3D Model object

3D Raster image

3D Raster image

Sticky Note icons

Sticky Note object

Sticky Note

Line icons

Raw line variables (Sounder-detected bottom, raw depth lines, raw heave lines)

V5 editable line

Editable line variables

V5 virtual line

Virtual line variables

Variable icons

Single_beam_objects_5

Single beam acoustic variables

Bottom classfication avariable

Bottom points variables

multibeam objects V5

Multibeam acoustic variables

Attitude - roll, pitch, heading

Attitude variables (Heading, Roll, Pitch)

Position variable

Position variables (Position GPS fixes)

Distance variables (Vessel logs)

video data

Video variables

Image object

Image variables

Variable status

Calibrtaion warning 5.00

Red inner border indicates that the variable uses LocalCal calibration settings.

Available colors: Red, No border.

For more information refer to Inheritance of properties: Borders.

Collapsed group Expanded group

Collapsed group of variables. The border is specified by the  group color.

Variables in an Expanded group have a border that is specified by the group color.

 

Object_unavailable

Light gray fill color: Unavailable object

Notes:

See also

Creating and deleting virtual variables
About virtual variables

Operators

Dataflow window keyboard shortcuts