StructureMap
The StructureMap feature overlays SideScan images from a StructureScan source on the map.
This makes it easier to visualize the underwater environment in relation to your position, and
aids in interpreting SideScan images.
The StructureMap image
The example below shows a chart panel with Structure overlay, combined with a traditional
SideScan panel.
You move around in the chart as usual when you have a Structure overlay:
•
zoom the chart and the scanned image by turning the rotary knob, by using the zoom
icons, or by pinching or spreading on the screen
•
move the chart to view the scanned image by dragging it in the desired direction
Pressing the
X
key or selecting the
Clear cursor
option removes the cursor from the panel,
and the chart center is positioned at the vessel.
Activating Structure overlay
1.
Turn on Structure overlay from the chart menu
- The chart menu is increased to show Structure options
- Structure data starts to appear on the chart screen as soon as Structure overlay is
enabled
2.
Select Structure source
- Live data is default
Ú
Note:
Structure overlay can also be activated by selecting a saved StructureMap file in
the files browser.
StructureMap sources
Two sources can be used to overlay Structure logs on the charts, but only one can be viewed
at a time:
•
Live data - Used when StructureScan data is available on the system.
•
Saved files - These are recorded StructureScan (*.sl2) data that are converted to
StructureMap (*.smf) format. Saved *.smf files can be used even if no StructureScan
sources are connected.
Live source
When live data is selected, the SideScan imaging history is displayed as a trail behind the
vessel icon. The length of this trail varies depending on available memory in the unit and
range settings. As the memory fills up, the oldest data is automatically deleted as new data is
added. When increasing the search range, the ping speed of the StructureScan transducer is
reduced, but the width and the length of the image history is increased.
Ú
Note:
Live mode does not save any data. If the unit is turned off, all recent data is lost.
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StructureMap
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