Virtual variable applications

With over 110+ Echoview operators, half of them multi-threaded for faster processing on multi-core computers, virtual variables enable you to apply advanced data analysis techniques to echogram data. Echoview demonstration mode allows to the use of all operators but restricts the export of data. The full use of operators is managed under the Echoview module licensing system.

Technique examples

• Bad data replacement
• Calibration sphere
• Cell statistic density indices
• Cell statistic - a proxy for fish density
• Towed body-mounted transducer (downward looking)
• dB difference - Absolute technique
• dB difference - Z score technique
• Masking with lines
• Multibeam target detection
• Near-field depth estimation
• Remove background noise - single beam Sv, TS
• Remove intermittent spike noise
• Remove impulse noise - single beam Sv, TS
• Remove transient noise - single beam Sv, TS
• Code operator
• Formula operator

Operator groups

• Ungrouped data manipulation operators
• Bitmap operators
• Conversion operators
• Convolution operators
  • Illustrated single beam convolutions
  • Illustrated multibeam convolutions
• Imaging operators
• Line operators
• Multibeam operators
• Movement operators
• Single target detection operators
• Single target manipulation operators

See also

About virtual variables
Operator licensing in Echoview
About the Dataflow Toolbox
About the Dataflow window