# quantities: Quantity Calculus for R Vectors

The **quantities** package provides integration of the ‘units’ and ‘errors’ packages for a complete quantity calculus system for R vectors, matrices and arrays, with automatic propagation, conversion, derivation and simplification of magnitudes and uncertainties.

## Documentation

Blog posts:

- Quantities for R – First working prototype, Mar 1, 2018.
- Using quantities to parse data with units and errors, May 7, 2018.
- Data wrangling operations with quantities, Jun 27, 2018.
- Quantities for R – Ready for a CRAN release, Aug 31, 2018.

Vignettes:

Papers:

- Edzer Pebesma, Thomas Mailund and James Hiebert (2016). “Measurement Units in R.”
*The R Journal*, 8 (2), 486–494. DOI: 10.32614/RJ-2016-061
- Iñaki Ucar, Edzer Pebesma and Arturo Azcorra (2018). “Measurement Errors in R.”
*The R Journal*, 10 (2), 549–557. DOI: 10.32614/RJ-2018-075

## Installation

Install the release version from CRAN:

`install.packages("quantities")`

The installation from GitHub requires the remotes package.

```
# install.packages("remotes")
remotes::install_github(paste("r-quantities", c("units", "errors", "quantities"), sep="/"))
```

## Acknowledgement

This project gratefully acknowledges financial support from the