Central wavelength value

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Description

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

Usage

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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)))

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)

  • 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.

See Also

Other wavelength summaries: min, range, stepsize

Other wavelength summaries: min, range, stepsize

Other wavelength summaries: min, range, stepsize

Examples

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