Exporting single target data

Single target values can be exported to a comma separated values file (*.target.csv). The export file will contain the properties for each single target.

Single target data may be read from a data file or may arise from Echoview single target detection.

Generally,

Note: Single target variables can be derived from multibeam target detection variables. When such a target.csv file is added to an EV file, its Dataflow object is created in a special way. See the Performance tip note for more information.

To export single targets for an entire echogram:

  1. On the Echogram menu, point to Export, and then click Single Target...

  2. Choose a folder and enter a file name.

  3. Click Save.

To export single targets for a region:

  1. Select the region.

  2. On the Shortcut menu (right-click), point to Export Region, and then click Single Target...

  3. Choose a folder and enter a file name.

  4. Click Save.

To export single targets for a selection:

  1. Make a selection using any selection tool.

  2. On the Shortcut menu (right-click), point to Export Selection, and then click Single Target...

  3. Choose a folder and enter a file name.

  4. Click Save.

Single target file format (*.target.csv)

Single target data for a selection, region or entire echogram can be exported into a *.csv file. The .target prefix is added to the csv file extension (e.g. filename.target.csv) to identify single targets exports from other data exports.

The first line of the .csv file lists the variables that are exported (these will be used as column headings if the file is loaded into a spreadsheet program). Each subsequent line contains the value for each variable for each single target detection.

The single targets Analysis by Regions or by Cells or by Regions by Cells (*.csv) output a subset of the listed export variables.

Note: Exported single target values from complex single target data represent the magnitude of the power scaled by TS algorithm values (that account for TVG, two-way absorption and system and transducer constraints).

Variable

Description

Ping_date

See Single targets variables and Automatically exported variables for descriptions.

Ping_time

Ping_milliseconds

Target_on_axis_depth under Echogram depth mode

Target_range

TS_comp

TS_uncomp

Angle_minor_axis*

Angle_major_axis*

PulseLengthDeterminationLevel

Samples_above_PLDL

StandDev_angles_minor_axis

StandDev_angles_major_axis

PulseLength_normalized_6dB

PulseLength_normalized_12dB

PulseLength_normalized_18dB

PulseLength_normalized_PLDL

Pulse_start_normalized_6dB

Pulse_start_normalized_12dB

Pulse_start_normalized_18dB

Pulse_start_normalized_PLDL

Pulse_duration

Target_true_depth

Target_latitude

Target_longitude

Target_northing

Target_easting

Exclude_below_line_depth+

Target_length

Target_length_uncompensated

Target_length_manual

Target_perimeter

Target_perimeter_edge_midpoints

Target_area

Target_area_edge_midpoints

Target_intensity_variation

Target_compactness

Target_compactness_edge_midpoints

Target_thickness

Target_length_across_beams

Target_range_extent

Ping number

Target_class

Target_orientation

* For targets derived from multibeam data the angular position is derived for the geometric center of the multibeam target.

+ A value is exported if an Exclude below line is selected on the Analysis page of the Variable Properties dialog box. Otherwise, the value is set to the no data export value.

Notes:

See also

About single targets