Exporting fish track analyses

• Fish track analysis by regions
• Fish track analysis by cells
• Single target export file format (*.csv)
• See also

Refer to the settings on the analyis page of the Variable Properties dialog box that affect your results, and the settings on the Export page of the EV File Properties dialog box to configure your analysis export results.

Fish track analysis by regions

To perform a fish track analysis export for the analysis regions in a single targets echogram.

1. Choose the Analysis variables to export and the Output format on the Export page of the EV File Properties dialog box.

• If Spreadsheet format (single file) is selected as the Output format, the exports will contain single target analysis variables for each domain (e.g., Num_targets, TS_mean);
• If Spreadsheet format (multiple files) is selected as the Output format, the exports will contain analysis variables for each single target in each domain (e.g., TS_comp, Region_ID, Target_range).
2. Open (or click to bring into focus) the single targets echogram for the export.
1. Define the regions for the export and set the region type to analysis (use the Region Browser dialog box).
2. Ensure the region classes for your export are visible on the Regions page.
3. Configure the settings on the Analysis page.
3. On the Echogram menu, choose Export, Analysis by Regions and click Fish Tracks...
4. If the Export fish track - Select Classes displays, choose the region class(es) to include in the export, then click Export...

The export is constrained to regions overlapping with any transects in an assigned transect group. Refer to Transects and export analyses for more details.

Fish track analysis by cells

To be counted in a cell, a fish track's end point must lie within the cell. For more information refer to About fish track regions - Inclusion in cells and Output empty cells - For fish track exports.

Invalid fish tracks will be included in fish track analysis exports. Valid values from these regions such as start ping and stop ping will be populated with the correct data while invalid values will be populated with null values.

To perform a fish track analysis export for the cells in a single targets echogram.

1. Choose the Analysis variables to export the Output format, and configure the empty cell handling on the Export page of the EV File Properties dialog box.

2. Open (or click to bring into focus) the single targets echogram for the export.
1. Configure the cells by specifying the Show time/distance grid and Show depth/range/line-referenced on the Grid page.
2. Configure the settings on the Analysis page.
3. On the Echogram menu, choose Export, Analysis by Cells and click Fish Tracks...

The export is constrained to cells overlapping with any transects in an assigned transect group. Refer to Transects and export analyses for more details.

Single target export file format (*.csv)

The single target analysis export output is a subset of Single target export file format (*.target.csv) and also includes:

• Region_bottom_altitude_max
• Region_bottom_altitude_mean
• Region_bottom_altitude_min
• Region_top_altitude_max
• Region_top_altitude_mean
• Region_top_altitude_min

Note: If intending to apply fish tracking to a Single target export file format (*.target.csv) from Echoview, ensure that the Output empty single target pings option is selected before the file is exported. Otherwise, when Echoview reads the *.target.csv file and recalculates the ping numbers, pings which did not contain any single targets are skipped, which has implications for the 'Maximum gap between single targets' and 'Minimum number of pings in tracks' fish tracking settings.

See also Automatically exported variables for fish track analyses.

See also

About detecting fish tracks
Fish track editing
About beam geometry
Fish track analysis variables
Special Export Values
Analyze Region dialog box
About interval and layer values in export files
Transducer geometry illustrated - fixed platform example