Approximate melanopic equivalent daylight illuminance (melanopic EDI)

Converts photopic illuminance (lux) to an approximate melanopic EDI value using a fixed calibration factor. Actigraphy devices' broadband light sensors do not measure spectral composition directly, so this is an approximation only and should not be treated as a substitute for spectroradiometric measurement.

Usage

compute_melanopic_edi(trace, calibration_factor = NULL)

Arguments

trace

An object of class luxR_trace (see light_trace()).

calibration_factor

Numeric scalar, photopic-lux-to-melanopic-EDI conversion factor. Default NULL, in which case a device-specific default is looked up from trace$device (not yet implemented).

Value

A numeric vector, same length as trace$lux, giving approximate melanopic EDI values.