| spread {photobiology} | R Documentation |
A function that returns the expanse (max(x) - min(x)) for R objects.
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 = !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). In the case of spectral
objects wavelength difference in nm. For any other R object, according to
available definitions of min and max.
default: Default method for generic function
numeric: Method for "numeric"
waveband: Method for "waveband"
generic_spct: Method for "generic_spct"
generic_mspct: Method for "generic_mspct" objects.
expanse(10:20) expanse(sun.spct) wl_expanse(sun.spct) expanse(sun.spct)