calibrate: Find a light threshold using calibration position and date

In ABindoff/TwilightFree: Reconstruct animal tracks from GLS tag data

Description

Find a light threshold using calibration position and date

Usage

calibrate(df, day, lon, lat, zenith = 96, offset = 0, verbose = T)

Arguments

df	data.frame containing 'Light' and 'Date' data at minimum
day	POSIXct date-time object in GMT or UTC specifying one day of calibration data
lon	known longitude of tag during calibration
lat	known latitude of tag during calibration
zenith	assumed solar zenith angle in degrees at twilight (depends on latitude and time of year, defaults to 96 degrees)
offset	time in hours to offset start of day time, defaults to 0
verbose	will plot light traces if TRUE

Value

threshold value for TwilightFree model

ABindoff/TwilightFree documentation built on March 10, 2021, 2:16 p.m.