Constructors of waveband objects for commonly used biological spectral weighting functions (BSWFs) and for different wavebands describing named ranges of wavelengths in the ultraviolet (UV), visible (VIS) and infrared (IR) regions of the electromagnetic spectrum. Part of the 'r4photobiology' suite, Aphalo P. J. (2015) <doi:10.19232/uv4pb.2015.1.14>.
This package provides constructors for objects of class waveband
from package 'photobiology'. These contructors are based on standard
definitions and frequently used non-standardized definitions. When
different definitions are in common use for a given named waveband the
constructors accept an argument to chose among them. Whenever an ISO
standard provides a definition, this is used by default. In the infrared (IR)
there are many different definitions and waveband names in use. We have
tried to include most of the commonly used names and definitions.
Definitions "matching" the different bands of Landsat imagers are included. These are simple wavelength ranges for wavelengths at half-maximun response as given in the NASA literature, which in some cases presents small inconsistencies. These definitions cannot exactly reproduce instrument responses as they do not describe the real spectral responisveness of the satellite imagers.
By necesity we cover only a subset of all definitions in use. These should
be thought as convenience functions, as waveband objects according to any
arbitrary definition can be constructed with the functions provided by
package photobiology-package
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Useful links:
# NOT RUN {
q_irrad(sun.spct, PAR()) # PAR photon irradiance
q_irrad(sun.spct, Blue("ISO")) # blue photon irradiance, ISO definition
q_irrad(sun.spct, Blue("Sellaro")) # blue photon irradiance, Sellaro et al.'s definition
e_irrad(sun.spct, VIS()) # VIS irradiance, ISO definition
q_irrad(sun.spct, VIS()) # VIS photon, ISO definition
# }
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