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units (version 0.4-6)

Measurement Units for R Vectors

Description

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

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Install

install.packages('units')

Monthly Downloads

367,582

Version

0.4-6

License

GPL-2

Issues

8

Pull Requests

0

Stars

199

Forks

34

Maintainer

Edzer Pebesma

Last Published

August 27th, 2017

Functions in units (0.4-6)

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)
units

Set measurement units on a numeric vector
units_options

set one or more units global options
install_conversion_constant

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

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

create axis label with appropriate labels
type_sum.units

type_sum for tidy tibble printing
Math.units

Mathematical operations for units objects
Ops.units

S3 Ops Group Generic Functions for units objects
deparse_unit

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

histogram for unit objects
ud_units

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

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

convert units object into difftime object
as_units

convert object to a units object