A function that returns the wavelength (or value) at the center of the
of the wavelength range of a waveband or spectrum object (or 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")
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.
Value
A numeric value equal to (max(x) - min(x)) / 2. In the case of spectral
objects a wavelength in nm. For any other R object, according to available
definitions of min and max.
Methods (by class)
default: Default method for generic function
numeric: Default method for generic function
waveband: Wavelength at center of a "waveband".
generic_spct: Method for "generic_spct".
generic_mspct: Method for "generic_mspct" objects.