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units (version 0.4-5)

Measurement Units for R Vectors

Description

Support for measurement units in R vectors; automatic propagation, conversion, derivation and simplification of units; raising errors in case of unit incompatibility. Compatible with the difftime class. Uses the UNIDATA udunits library and unit database for unit conversion and compatibility checking.

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Install

install.packages('units')

Monthly Downloads

328,156

Version

0.4-5

License

GPL-2

Issues

14

Pull Requests

0

Stars

183

Forks

32

Maintainer

Edzer Pebesma

Last Published

June 15th, 2017

Functions in units (0.4-5)

as.dt

convert units object into difftime object
as.units

convert object to a units object
install_conversion_constant

Install a function for conversion between user-defined units.
install_conversion_function

Install a function for conversion between user-defined units.
ud_units

List containing pre-defined units from the udunits2 package.
unitless

The "unit" type for vectors that are actually dimension-less.
make_unit

Create a new unit from a unit name.
parse_unit

parse unit in product power form (e.g. km m-2 s-1)
plot.units

create axis label with appropriate labels
type_sum.units

type_sum for tidy tibble printing
as_cf

deparse unit to string in product power form (e.g. km m-2 s-1)
hist.units

histogram for unit objects
Math.units

Mathematical operations for units objects
Ops.units

S3 Ops Group Generic Functions for units objects
units

Set measurement units on a numeric vector
units_options

set one or more units global options