Skytrack compares geolocator based light measurements in lux with those modelled by the sky illuminance model of xyz.
a data frame containing date time and lux values
start location of logging, required when using a tolerance based estimation. When no start_location is used the default bounding box (bbox) settings are used.
tolerance on the search window for optimization, given in degrees (to pad left - right, top - bottom). Uses the previous steps location to constrain the parameter (location) search space. This requires the start_location parameter to be set, as you need a start position for a trusted initial location.
range of values to consider during processing, should be provided in lux c(min, max) or the equivalent if non-calibrated
scale / sky condition factor, by default covering the skylight() range of 1-10 but can be extended for more flexibility in case of non lux measurements
control settings for the Bayesian optimization, generally should not be altered (defaults to a sequential monte carlo method)
mask with priors to constrain positions
a step selection function on the distance of a proposed move
plot map of incrementally changing determined locations as a progress method
given feedback including a progress bar
data frame with location estimate, their uncertainties, and ancillary model parameters useful in quality control
Model fits are applied by default to values up to sunrise or after sunset only as most critical to the model fit (capturing daylength, i.e. latitude and the location of the diurnal pattern - longitudinal displacement).