Find the conversion factor between two units, when there is one

The conversions of pknca_units_table() are requested by the user and so fail loudly when they cannot be made. This answers the different question of whether two units PKNCA derived itself can be reconciled – units that are unrelated (a concentration and an amount) or outside udunits ("IU/mL") are an expected answer of "no" rather than a mistake.

Usage

pknca_unit_reconcile_factor(from, to)

Arguments

from, to

Single unit strings, as they appear in the "PPORRESU" and "PPSTRESU" columns of a unit conversion table

Value

The number that a value in from units is multiplied by to express it in to units, or NA_real_ when the two are not convertible or the units package is not installed.

See also

pknca_units_table()