Apply Bathymetry Filters

Filter swath or single beam data using various filters including IHO S-44 options for filtering.

The Filter Observed Depths dialog box is used for both Swath and Single Beam filtering.

Hover the cursor over a field name to see a short description of the field function in a screen tip

The fields in the dialog box are set to default values. If a setting is changed from the default, the status indicator box for the field changes to grey. Defaults can be restored by clicking on the indicator box and selecting “Reset”.

These filters can be applied to a selected line or lines, or to All track lines.

Procedure

1. [Optional] Select track lines.

2. Select the Apply Bathymetry command.

3. Set the Type of Bathymetry to Filter: Swath or Single Beam. This will activate the options for that data type.

4. Enable the Accept check box to filter in Accepted data. Otherwise all filtered data will be rejected.

5. Enable the IHO Order check box.

6. Select an IHO S-44 or IHO order from the list.

7. If S-57User Defined is chosen, enable the IHO Limits and IHO Horizontal Distance Limits check box, and define values.

8. Enable the Filter Data check box and set values in the Minimum and Maximum fields for a range of depths to which filtering will be applied.

9. Enable the Beam to Beam Slope include rejected to include previously rejected soundings when recalculating slopes during multiple runs of the filter.

10. Enable options for the Bathymetry type set above, and enter values.

11. Click OK to filter data.