Option

Description

Output File

The name and location for the resulting ASCII file.

Coordinate System

On: The user must select the coordinate system to use for the export by clicking the browse (...) button, which launches the Select Coordinate Reference System dialog box, and selecting a coordinate system. See Coordinate Reference System Selection for information on using this tool.

Off: Data is exported using the coordinate system of the source data.

Units

The horizontal position units to use for position values. The position units options available will differ depending on the format of the source data.

• If exporting Ground data, all options provided in the drop-down list will be available.

• If exporting Geographic data, the Ground option will not be displayed. The drop-down list provides the following options:

• Ground: ground units

• Geographic DMS (N/S/E/W): geographic degrees-minutes-seconds. A cardinal direction character, N, S, E, or W, is appended to the end of each coordinate value for the hemisphere.

• Geographic DMS: geographic degrees-minutes-seconds. A minus character ("-") is appended to the beginning of each coordinate value in the S or W hemisphere.

• Geographic DD: geographic decimal-degrees. A minus character("-") is appended to the beginning of each coordinate value in the S or W hemisphere.

Precision

The number of decimal places to include in coordinate values. Up to nine decimal places are allowed.

Available

All attributes in the input coverage that are available for export. To include an attribute in the exported data, select the attribute in the Available list and click the right-arrow button to move it to the Selected list.

Selected

The attributes of the input coverage that have been selected to be included in the export. The order of the attributes in this list control the order of the attributes in the output file. The order can be changed as needed using the up-arrow and down-arrow buttons when an attribute is selected in the list.

Attributes can also be removed from the Selected list using the left‑arrow button.

Attribute Precision

Assign a precision value to each attribute being exported. The precision determines the number of decimal places in the exported values. Select the attribute in the Selected list and select or type a precision value in the field.

Delimiter

The character used to separate attribute values in the ASCII file. This character makes it easier to distinguish the exported values for each attribute. A space, comma, or tab are provided as options, but any single alphanumeric character can be used.

Filter Attributes

On: Filter out data you do not want included in the export, for example, interpolated nodes. Filtering is performed according to attribute values using an equation built in the Filter Attributes dialog box, which is launched from the Filter attributes browse (...) button. See Filter Attributes for information on using the Filter Attributes dialog box.

Off: All data is exported for the selected attributes.

Include Headers

On: The first row of the ASCII file is populated with column headers for the selected attributes.

Off: The first row of the ASCII file is populated with attribute values.

Include Rejected

On: Include rejected soundings in the export. By default, soundings flagged as rejected are not included to ensure that a clean surface can be created from the exported data.

Off: Rejected soundings are excluded from the export.

Z-axis convention in output

Define the Z-axis convention of the data in the exported file. By default, the export will use the direction defined in the Z-axis Convention option in the Coverages category of Tools > Options, but this setting will override that setting. If the exported Z values are required to be Z-axis positive up, select Up is positive. If the exported Z values are required to be Z-axis positive down, select Down is positive.

Bin

Nodes in the selected coverage can be exported as binned (each in its original position in the grid cell). Click the check box to enable the binning options.

Size

If full resolution is not required for the data, a lower resolution size can be specified.

Bias

Export the data with either a shoal or deep bias.