A method that returns the wavelength [\(nm\)] (or value) at the center of
the wavelength range of objects of classes waveband or of class
generic_spct or derived (or the midpoint from a numeric
vector).
Usage
wl_midpoint(x, ...)
midpoint(x, ...)
# S3 method for default
midpoint(x, ...)
# S3 method for numeric
midpoint(x, ...)
# S3 method for waveband
midpoint(x, ...)
# S3 method for generic_spct
midpoint(x, ...)
# S3 method for generic_mspct
midpoint(x, ..., idx = "spct.idx")
Value
A numeric value equal to max(x) - min(x)) / 2. In the case of
spectral objects a wavelength [\(nm\)]. For any other R object, according
to available definitions of min and max.
Arguments
x
an R object
...
not used in current version
idx
character Name of the column with the names of the members of the
collection of spectra.
Methods (by class)
midpoint(default): Default method for generic function
midpoint(numeric): Default method for generic function
midpoint(waveband): Wavelength at center of a "waveband".
midpoint(generic_spct): Method for "generic_spct".
midpoint(generic_mspct): Method for "generic_mspct" objects.
See Also
Other wavelength summaries:
wl_min(),
wl_range(),
wl_stepsize()
Other wavelength summaries:
wl_min(),
wl_range(),
wl_stepsize()
Other wavelength summaries:
wl_min(),
wl_range(),
wl_stepsize()