Far-red radiation according to "ISO" (not defined) or as commonly defined in
plant photobiology, "Smith10" (725-735 nm), "Smith20" (720-740 nm), "Inada"
(700-800 nm), "Warrington" (700-850 nm), and "Sellaro" (700-750 nm). The
red-edge used in remote sensing of vegetation is centred at the reflectance
transition in the far-red band (725 nm), we define "RedEdge40"
(705-745 nm) and "RedEdge20" (715-735 nm).
Usage
Far_red(std = "ISO")
Arguments
std
a character string, defaults to "ISO", as for other colour
definitions, which in this case returns NA.
See Also
NIR for wavebands close to the boundary between red
and infrared regions.