The Critical Soundings Detection function can result in clusters of critical soundings around detected features. To more precisely designate the critical sounding, radius filters can be used to define an area to filter such clusters.
The filter will be applied to whichever sounding type you have selected in the Output field. Shoal and Deep can both be set, and detected soundings of each type will be filtered separately.
You can set a single value as the radius of the area around the features you want to filter, or use a text file containing a table of values for:
• minimum depth of the range
• maximum depth of the range
• minimum radius between soundings for the depth range.
(See Sounding Radius Table for an example.)
Procedure
1. Open a surface.
2. Select the Critical Sounding Detection command.
3. Define the Inputs and Outputs of the process.
4. Set Shoal and Deep Attributes.
5. [Optional] Set contour intervals or filters to detect soundings more precisely. See Contour settings
6. [Optional] Set a Radius Filter.
7. Click OK to run the detection process with default settings and no radius filtering.
Attributes and their set values will be saved with the detected soundings.