photobiology (version 0.9.4)

midpoint.generic_mspct: Central wavelength value

Description

A function that returns the wavelength at the center of the wavelength range.

Usage

## S3 method for class 'generic_mspct':
midpoint(x, ..., idx = !is.null(names(x)))

## S3 method for class 'generic_spct':
midpoint(x, ...)

midpoint(x, ...)

## S3 method for class 'default':
midpoint(x, ...)

## S3 method for class 'numeric':
midpoint(x, ...)

## S3 method for class 'waveband':
midpoint(x, ...)

Arguments

x

an R object

...

not used in current version

idx

logical whether to add a column with the names of the elements of spct

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)

• generic_mspct: Method for "generic_mspct" objects.
• generic_spct: Method for "generic_spct" objects.
• default: Default method for generic function
• numeric: Default method for generic function
• waveband: Wavelength at center of a "waveband" object.

See Also

Other wavelength summaries: max.generic_mspct, min.generic_mspct, min.waveband, range.generic_mspct, range.waveband, stepsize.generic_mspct Other wavelength summaries: max.generic_mspct, min.generic_mspct, min.waveband, range.generic_mspct, range.waveband, stepsize.generic_mspct Other wavelength summaries: max.generic_mspct, min.generic_mspct, min.waveband, range.generic_mspct, range.waveband, stepsize.generic_mspct

Examples

midpoint(sun.spct)