Return a copy of an R object with its class set to a given type of spectrum, or convert an R object of a different class into one of the spectral classes.
Details
Data frames, tibbles and similar objects are accepted as input if
the column names are those expected by the matching class setting
functions. An exception, is that an additional method specialization for
conversion of waveband objects into response_spct objects is
also defined.
See also
Other constructors of spectral objects:
as.calibration_spct(),
as.chroma_spct(),
as.cps_spct(),
as.filter_spct(),
as.object_spct(),
as.raw_spct(),
as.reflector_spct(),
as.response_spct(),
as.solute_spct(),
as.source_spct(),
source_spct()
