to_delta: Convert to delta value

In isoverse/isotopia: Work with Isotopic Data in R

Description

to_delta converts another isotopic data type to a delta value. The to_d function is a shorthand for to_delta but otherwise identical.

Usage

to_delta(iso, ref_ratio)

to_d(iso, ref_ratio)

## S4 method for signature 'ANY,ANY'
to_delta(iso, ref_ratio)

## S4 method for signature 'Isosys,missing'
to_delta(iso, ref_ratio)

## S4 method for signature 'Delta,missing'
to_delta(iso, ref_ratio)

## S4 method for signature 'FractionationFactor,missing'
to_delta(iso, ref_ratio)

## S4 method for signature 'FractionationFactor,numeric'
to_delta(iso, ref_ratio)

## S4 method for signature 'FractionationFactor,Ratio'
to_delta(iso, ref_ratio)

## S4 method for signature 'Ratio,missing'
to_delta(iso, ref_ratio)

## S4 method for signature 'Ratio,numeric'
to_delta(iso, ref_ratio)

## S4 method for signature 'Ratio,Ratio'
to_delta(iso, ref_ratio)

## S4 method for signature 'Ratios,Ratios'
to_delta(iso, ref_ratio)

## S4 method for signature 'Abundance,ANY'
to_delta(iso, ref_ratio)

Arguments

iso	isotopic data object (ratio, abundance, delta, etc.)
ref_ratio	the refernce ratio associated with the delta value. This is optional but required if planning later conversions back to ratios or abundane values. Can be supplied as a raw numeric numer or a Ratio object (in the case of the latter, the compound name of the Ratio object will be registered as the name of the reference).

Value

isotope delta object if iso can be converted to a delta, an error otherwise

See Also

Other data type conversions: to_abundance, to_ff, to_ratio

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