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GeoLight (version 2.0.0)

Analysis of Light Based Geolocator Data

Description

Provides basic functions for global positioning based on light intensity measurements over time. Positioning process includes the determination of sun events, a discrimination of residency and movement periods, the calibration of period-specific data and, finally, the calculation of positions.

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Version

Install

install.packages('GeoLight')

Monthly Downloads

46

Version

2.0.0

License

GPL (>= 2)

Maintainer

Simeon Lisovski

Last Published

September 6th, 2015

Functions in GeoLight (2.0.0)

geolight.convert

Convert GeoLight Format

HillEkstromCalib

Hill-Ekstrom calibration

Transformation of *.glf files

Calculate the appropriate sun elevation angle for known location

Example data for calibration: Light intensities and twilight events

Residency analysis using a changepoint model

Transformation of *.gle files

GeoLight-package

The GeoLight Package

Simple Threshold Geolocation Estimates

Filter for unrealistic positions within a track based on distance

Filter to remove outliers in defined twilight times based on smoother function

Function for making a data frame summarising residency and movement pattern.

Light intensity measurements over time recorded on a migratory bird

Atmospheric Refraction

Filter to remove noise in light intensity measurements during the night

Sunrise and sunset times: From light intensity measurement (hoopoe1)

Function to merge sites

Transformation of staroddi files

Draws sites of residency and adds a convex hull

Transformation of *.lig files

Transformation of *.lux files

Write a file which plots a trip in Google Earth

Calculate twilight events (sunrise/sunset) from light intensity measurements over time

Solar Time and Declination

Solar Zenith Angle

Draw the positions and the trip on a map

Transformation of *.trn files

Times of Sunrise and Sunset