Convert 'colorSpec::colorSpec' objects into spectral objects (xxxx_spct,
xxxx_mspct) as defined in package 'photobiology' and vice veersa preserving
as much information as possible.
numeric A multiplier to be applied to the 'spc' data to do
unit or scale conversion.
...
currently ignored.
spct.data.var
character The name of the variable to read spectral data
from.
Warning!
Always check the sanity of the imported or exported data
values, as guessing is needed when matching the different classes, and the
functions defined here are NOT guaranteed to return valid data wihtout help
from the user through optional function arguments.