The following variables can be exported to MATLAB format files:
To export data from an entire single beam echogram:
Display an Sv echogram.
On the Echogram menu, point to Export and then click Sv Values.
Choose a folder and enter a filename.
In the Save as type list, click Matlab files (*.mat).
Click Save.
To export data from a selection on a single beam echogram:
Display an Sv echogram.
Make a selection using the vertical band tool 
.
On the Shortcut menu (right-click), point to Export, and then click Sv Values.
Choose a folder and enter a filename.
In the Save as type list, click Matlab files (*.mat).
Click Save.
Note: The longitude and latitude values that are exported are the longitude and latitude of the GPS antenna at the time the ping was transmitted, see What is affected by transducer geometry for more information.
To export data from an entire multibeam echogram:
Display the echogram of an Sv or magnitude variable.
On the Echogram menu, point to Export and then click Sv Values.
On the Export Variable Data dialog box, select the pings to export and click Export.
Choose a folder and enter a filename.
In the Save as type list, click Matlab files (*.mat).
Click Save.
Note: The longitude and latitude values that are exported are the longitude and latitude of the GPS antenna at the time the ping was transmitted, see What is affected by transducer geometry for more information.