Calculate/convert to an isotope fractionation_factor
to_ff(iso1, iso2) # S4 method for ANY,ANY to_ff(iso1, iso2) # S4 method for FractionationFactor,missing to_ff(iso1, iso2) # S4 method for FractionationFactors,missing to_ff(iso1, iso2) # S4 method for Ratio,Ratio to_ff(iso1, iso2) # S4 method for Delta,missing to_ff(iso1, iso2) # S4 method for Delta,Delta to_ff(iso1, iso2)
| iso1 | the top compound in the fractionation factor |
|---|---|
| iso2 | the bottom compound in the fractionation factor |
isotope fraction_factor object if parameters can be converted, an error otherwise
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)
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.
Other data type conversions: to_abundance,
to_delta, to_ratio