to_ff: Fractionation factor

In isoverse/isotopia: Work with Isotopic Data in R

Description

Calculate/convert to an isotope fractionation_factor

Usage

to_ff(iso1, iso2)

## S4 method for signature 'ANY,ANY'
to_ff(iso1, iso2)

## S4 method for signature 'FractionationFactor,missing'
to_ff(iso1, iso2)

## S4 method for signature 'FractionationFactors,missing'
to_ff(iso1, iso2)

## S4 method for signature 'Ratio,Ratio'
to_ff(iso1, iso2)

## S4 method for signature 'Delta,missing'
to_ff(iso1, iso2)

## S4 method for signature 'Delta,Delta'
to_ff(iso1, iso2)

Arguments

iso1	the top compound in the fractionation factor
iso2	the bottom compound in the fractionation factor

Details

The to_ff(...) function calculates the fractionation factor between two isotope data objects (for example two delta values, two ratio, or two ff). All calculatinos are only permissible if the isotope values have matching attributes and fractionation factors will be returend in the default notation (see set_iso_opts for details)

Value

isotope fraction_factor object if parameters can be converted, an error otherwise

Note

Some of the conversions are also implemented in arithmetic shorthand, for example to generate an fractionation factor in alpha notation from two ratios to_ff(ratio(), ratio()) is the same as ratio() / ratio(). See arithmetic for details.

See Also

Other data type conversions: to_abundance, to_delta, to_ratio

isoverse/isotopia documentation built on Nov. 5, 2019, 2:40 p.m.