Uncorrected_perimeter is an analysis export variable available in exported integration analyses.

It reports the length of the perimeter (in the plane of the echogram) of a school represented by a region on an echogram (m). It is calculated by summing the distance around each sample at the edge of the region.

This variable is exported only if it is selected on the Export page of the EV File Properties dialog box.

Note: If the region being analyzed extends beyond the range of the available GPS data, the special export value "-1" will be exported.

See also

About analysis
About analysis variables

School Detection module algorithms

About Uncorrected_area

About Uncorrected_length

About Uncorrected_thickness