About analysis variables

The result of any exported analysis is one or more files containing comma separated values (.csv format) and a header line which identified what each column contains. The header line contains the names of the analysis export variables which are in the file.

Some analysis variables are exported automatically, others must be selected on the Export page of the EV File Properties dialog box in order to be exported.

The order of the columns (variables) in an exported file is held constant across Echoview releases to ensure that any software you have or create in order to process such exported data can use the column number reliably to interpret the data, for a given type and configuration of export.

The analysis variables are grouped into the following categories:

• General analysis variables
  • Analysis common
  • Analysis domain
  • Analysis export
• Integration analysis variables
  • Integration results
  • Integration schools
  • Integration settings
  • Biomass
• Single targets and fish track analysis variables
  • Single targets
  • Fish tracks
  • Frequency distribution
• Multibeam analysis variables
  • 3D_region metrics
  • 3D region integration analysis variables
  • Surface metrics

General analysis variables

Variables listed in blue must be selected on the Export page of the EV File Properties dialog box in order to be exported.

Variables listed in green cannot be selected on the Export page of the EV File Properties dialog box, they are exported automatically with the appropriate type of analysis export.

Variables listed in red will only be exported for integration analyses by cells or by regions by cells if Output empty cells is selected on the Export page of the EV File Properties dialog box.

In the following list of analysis variables the order is alphabetic (not the order in which the columns appear in the exported file). Groups of very closely related variables are summarized, not listed individually, in order to improve legibility (e.g. Date_E, M & S, is short for Date_E and Date_M and Date_S).

Integration analysis variables

Variables listed in blue must be selected on the Export page of the EV File Properties dialog box in order to be exported.

Variables listed in green cannot be selected on the Export page of the EV File Properties dialog box, they are exported automatically with the appropriate type of analysis export.

Variables listed in red will only be exported if you have the Schools detection module licensed.

In the following list of analysis variables the order is alphabetic (not the order in which the columns appear in the exported file).

Single target and fish track analysis variables

Variables listed in blue must be selected on the Export page of the EV File Properties dialog box in order to be exported.

Variables listed in green cannot be selected on the Export page of the EV File Properties dialog box, they are exported automatically with the appropriate type of analysis export.

Variables listed in red can only be exported if you have the Fish tracking module licensed.

In the following list of analysis variables the order is alphabetic (not the order in which the columns appear in the exported file). Groups of very closely related variables are summarized, not listed individually, in order to improve legibility (e.g. Angle_minor_axis & major is short for Angle_minor_axis and Angle_major_axis). See Export file formats for more information on the groupings of variables that are exported for Database or Spreadsheet output. 

+This analysis variable is available only when Database format is selected on the Export page of the EV File Properties dialog box.

*This analysis variable is not available in analysis exports, but in data exports only.

See also

Multibeam analysis variables
About analysis
About exporting analyses