second_filter_4h {filteRjsats}

Four Hit Filter for Any Detection File

Description

This function takes any acoustic receiver detection dataframe generated from the add_fish() function and filters it a second time to remove any remaining multipath detections. Then applies an algorithm to assess and filter all remaining detections based on a four hit filter.

Usage

second_filter_4h(fish_file)

Arguments

fish_file

a dataframe of detections retrieved from add_fish()

Value

A dataframe which has been filtered to remove false positives

Examples

# Apply a 4 hit filter based on the technology
second_filter_4h(filter_fish_detects)