| spread {photobiology} | R Documentation |
Expanse
Description
A method that returns the expanse (max(x) - min(x)) for R objects. In
particular the wavelength [nm] expanse of the wavelength range of
objects of classes waveband or of class generic_spct or derived
(or the expanse of values in a numeric vector).
Usage
spread(x, ...)
wl_expanse(x, ...)
expanse(x, ...)
## Default S3 method:
expanse(x, ...)
## S3 method for class 'numeric'
expanse(x, ...)
## S3 method for class 'waveband'
expanse(x, ...)
## S3 method for class 'generic_spct'
expanse(x, ...)
## S3 method for class 'generic_mspct'
expanse(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). In the case of
spectral objects wavelength difference [nm]. For any other R object,
according to available specialised methods of min and
max.
Methods (by class)
-
expanse(default): Default method for generic function -
expanse(numeric): Method for "numeric" -
expanse(waveband): Method for "waveband" -
expanse(generic_spct): Method for "generic_spct" -
expanse(generic_mspct): Method for "generic_mspct" objects.
Examples
expanse(10:20)
expanse(sun.spct)
wl_expanse(sun.spct)
expanse(sun.spct)