Name

A name for the rule. For example:

Name="Custom Rounding Rule"

This value is displayed in a list in any CARIS application where the sounding rounding option is present.

Description

A description of the rule and parameters. For example:

Description= "Default rounding in metres and decimetres (= 30,21,R)"

The parameters section, in brackets after the description, is optional. It lists the sounding thresholds and but does not define them. See Range to define the thresholds.

If you wish to include the parameters in the description, use the following formal:

(= threshold_1,threshold_2,[threshold_x], sounding_flag)

The thresholds describe the sounding ranges. The sounding flag describes if the sounding is rounded, truncated, or has the rule scheme of a specific hydrographic agency applied.

In the above example, there are two thresholds. The upper threshold is 30 metres or deeper; the lower threshold is 21 metres and shallower. This defines the following three ranges:

• Soundings from 0 to 20.999.

• Soundings from 21 to 29.999 metres.

• Soundings 30 metres and over.

The sounding flag can be any of the following:

• R: Rounded

• T: Truncated

• A: Round or truncate to AHOI standards

• N: Round or truncate to NOAA standards

• U: Round or truncate to UKHO standards

• V: Round or truncate to NAVO standards

Whole_Unit_Conversion_Factor

The conversion factor used to define measurement units. CARIS applications use metres by default, so the conversion factor for metres would be 1.0:

Whole_Unit_Conversion_Factor= "1.0"

If you use another unit, you have to multiply the metres to convert them. For example, to convert from metres to feet, use:

Whole_Unit_Conversion_Factor= "3.2808399"

Whole_Unit_Label_Singular

The unit label used when displaying singular values. For example:

Whole_Unit_Label_Singular= "Metre"

Whole_Unit_Label_Plural

The unit label for plural values. For example:

Whole_Unit_Label_Plural= "Metres"