About graphs
Echoview provides graphs for viewing detailed aspects of data.
Graph navigation
- The tooltip information for data under the mouse pointer is of the form (x, y) coordinates.
- Zoom-in and zoom-out tools and Zoom shortcut keys can be used.
- A rectangular selection can be used to zoom-in.
- Double-click on any time-based, ping, Bottom classification or Single target TS vs depth graph. See also Echogram navigation: Synchronizing echograms.
- While zoomed-in, click the mouse wheel and drag to pan. Alternatively, press the Spacebar and left mouse button and drag.
- Tip: You can't pan when the mouse pointer is over data.
- A legend, that can be shown or hidden using the Shortcut menu, appears for the Threshold Response graph.
- It is possible to link some graphs dynamically to the selection and/or the selected region. See About Linking Graphs for more detail.
- The ping graph and graphs where the X-axis is time based (line, heading, pitch or roll graph) - see table below- can be placed in an Auto-synchronization group.
- Graphs whose X-axis is based on time, support Mouse pointer duplication.
- Use Shortcut menu (right-click), Graph Properties to configure graph labels and axes-limits.
- Use the Graph keyboard shortcuts.
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Graph |
Availability |
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Available for a region or selection on a single target echogram. Graphed points are displayed in the single target color. The set includes:
Notes:
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Available for a region or selection on a single target echogram - single targets are displayed in 3D. Source data type: single targets. |
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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. |
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Available for a single beam on a single sector plot. Source data type: acoustic multibeam data. |
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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. |
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Available for a region or selection on an echogram. Source data type: acoustic single beam or single targets data or multibeam regions or selections. |
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Available for a heading variable. |
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Available for a length variable. |
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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. |
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Available for a region or selection on a single targets echogram. Source data type: single targets. |
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Available for a region or selection on a single targets echogram. Source data type: single targets. |
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Available for a region or selection on a single targets echogram. Source data type: single targets. |
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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). |
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Available for a pitch variable. Source data type: pitch. |
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Available for a roll variable. Source data type: roll. |
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Available for a speed variable. Source data type: speed. |
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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). |
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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. |
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These graphs support multiple variables. However, these graphs don't support unlicensed virtual variables. |
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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. |
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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. |
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Available for a region or selection on a Sv echogram. Displays the response from multiple variables. Source data type: single beam Sv. |
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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. |