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:
• Touch operation: zoom the chart and the scanned image by using the zoom (+ or -)
buttons, or by pinching or spreading on the screen. Drag on the panel to view the
scanned image.
• Key operation: zoom the chart and the scanned image by using the +/- keys.
• Remote controller operation: zoom the chart and the scanned image by turning the rotary
knob, by using the zoom icons or the IN/OUT keys. Move the chart to view the scanned
image by using the arrow keys
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
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StructureMap | NSO evo2 Operator Manual
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