priceR

Retrieve exchange rates from https://exchangerate.host/.

The priceR R package is maintained by stevecondylios and available on CRAN and GitHub.

The blog post Convertinb Between Currencies Using priceR by Bryan Shalloway provides a useful instruction.

The package provides helpers for:

• Exchange rates: Retrieve exchange rates for immediate use
• Inflation: Deflate nominal values to real prices
• Formatting: Handle currencies in written work like RMarkdown

Previous versions of the package relied on the World Bank (WB) API and the European Central Bank (ECB)'s Statistical Warehouse https://data.ecb.europa.eu/.

The latest versions of the package retrieve all data from https://exchangerate.host/.

Inflation adjustment calculations are performed according to the textbook "Principles of Macroeconomics" by Gregory Mankiw et al. (2014).

The package follows the ISO 4217 currency codes.

Setup

1. Go to https://exchangerate.host/ and create a free account. The API allows you to 100 requests per calendar month.

2. Save the API key as EXCHANGERATEHOST_ACCESS_KEY in your .Renviron file, which you open with a call to usethis::edit_r_environ()

3. Then restart your R session.

4. Check if R recognizes the API key with a call to Sys.getenv("EXCHANGERATEHOST_ACCESS_KEY").

5. Then install the R package with install.packages("priceR") and load it with library(priceR)

Citation

Condylios S (2023). priceR: Economics and Pricing Tools. R package version 1.0.1, https://CRAN.R-project.org/package=priceR.