units: install_conversion_constant – R documentation

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install_conversion_constant

Install a conversion constant or offset between user-defined units.

Description

Tells the units package how to convert between units that have a linear relationship, i.e. can be related on the form y = α x (constant) or y = α + x (offset).

Usage

install_conversion_constant(from, to, const)

install_conversion_offset(from, to, const)

Arguments

`from`	String for the symbol of the unit being converted from.
`to`	String for the symbol of the unit being converted to. One of `from` and `to` must be an existing unit name.
`const`	The constant α in the conversion.

Details

This function handles the very common case where units are related through a linear function, that is, you can convert from one to the other as y = α x. Using this function, you specify that you can go from values of type from to values of type to by multiplying by a constant, or adding a constant.

units

Measurement Units for R Vectors

v0.7-1

GPL-2

Authors

Edzer Pebesma [aut, cre] (<https://orcid.org/0000-0001-8049-7069>), Thomas Mailund [aut], Tomasz Kalinowski [aut], James Hiebert [ctb], Iñaki Ucar [aut] (<https://orcid.org/0000-0001-6403-5550>)

Initial release