| wl_midpoint {photobiology} | R Documentation |
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).
wl_midpoint(x, ...) midpoint(x, ...) ## Default S3 method: midpoint(x, ...) ## S3 method for class 'numeric' midpoint(x, ...) ## S3 method for class 'waveband' midpoint(x, ...) ## S3 method for class 'generic_spct' midpoint(x, ...) ## S3 method for class 'generic_mspct' midpoint(x, ..., idx = !is.null(names(x)))
x |
an R object |
... |
not used in current version |
idx |
logical whether to add a column with the names of the elements of spct |
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.
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.
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
midpoint(10:20) midpoint(sun.spct) wl_midpoint(sun.spct) midpoint(sun.spct)