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Adding currency info to README.Rmd #5

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Apr 30, 2015
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Adding currency info to README.Rmd #5

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17 changes: 17 additions & 0 deletions README.Rmd
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Expand Up @@ -15,6 +15,23 @@ knitr::opts_chunk$set(collapse = TRUE)

Excerpt from the [Gapminder](http://www.gapminder.org/data/) data. This R data package provides the data as a data.frame and in plain text delimited form. Package includes premade color schemes for the countries and continents.

This data.frame includes six columns, ([documentation page here](http://www.gapminder.org/data/documentation/gd001/)):

| column name | meaning |
|:------------|:----------------|
|country | country name |
|continent | contient name |
|year | |
|lifeExp | Life Expectancy |
|pop | Population |
|gdpPercap | per-capita GDP |

Per-capita GDP (Gross domestic product) is given in units of [international dollars](http://en.wikipedia.org/wiki/Geary%E2%80%93Khamis_dollar). From Wikipedia:

> [...] the international dollar is a hypothetical unit of currency that has the same purchasing power parity that the U.S. dollar had in the United States at a given point in time

In gapminder, the currency matches the US dollar in 2005.

### Install and test drive

Install `gapminder` from CRAN:
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