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skytrackr: A Sky Illuminance Location Tracker

Calculate geolocations by light using template matching. The routine uses a calibration free optimization of a sky illuminance model to determine locations robustly using a template matching approach, as described by Ekstrom (2004) <https://nipr.repo.nii.ac.jp/records/2496>, and behaviourly informed constraints (step-selection).

Version: 1.0
Depends: R (≥ 4.2)
Imports: skylight, circular, BayesianTools, cli, utils, memoise, stats, rlang, sf, terra, geosphere, tidyr, dplyr, ggplot2, plotly, patchwork, mapview
Suggests: knitr, rmarkdown, bookdown, covr, testthat, multidplyr
Published: 2025-10-08
DOI: 10.32614/CRAN.package.skytrackr (may not be active yet)
Author: Koen Hufkens ORCID iD [aut, cre], BlueGreen Labs [cph, fnd]
Maintainer: Koen Hufkens <koen.hufkens at gmail.com>
BugReports: https://github.com/bluegreen-labs/skytrackr/issues
License: AGPL-3
URL: https://github.com/bluegreen-labs/skytrackr
NeedsCompilation: no
Citation: skytrackr citation info
CRAN checks: skytrackr results

Documentation:

Reference manual: skytrackr.html , skytrackr.pdf
Vignettes: Optimization tips (source, R code)
Parallel processing (source, R code)
The skytrackr R package (source, R code)

Downloads:

Package source: skytrackr_1.0.tar.gz
Windows binaries: r-devel: skytrackr_1.0.zip, r-release: not available, r-oldrel: not available
macOS binaries: r-release (arm64): skytrackr_1.0.tgz, r-oldrel (arm64): skytrackr_1.0.tgz, r-release (x86_64): skytrackr_1.0.tgz, r-oldrel (x86_64): skytrackr_1.0.tgz

Linking:

Please use the canonical form https://CRAN.R-project.org/package=skytrackr to link to this page.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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