GDP Choropleth Map of the World

Svetlana Aksyuk
16 Apr. 2017

Developing Data Products @ coursera.com
Course Project

Explore World Bank GDP indicators

  • Select one of four indicators of GDP per capita

  • Choose year

  • Generate choroplet world map

  • Measure inequality among countries with Gini coefficient: coefficient of 1 (or 100%) expresses maximal inequality among values

  • See top and low 5 countries by chosen indicator

GDP Choropleth Map of the World
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Application input

“Select year” slider:

  • Years range from 2000 to 2015

“Select indicator to plot” radio button:

  • GDP per capita available in constant and current prices, in US dollars and at purchasing power parity

  • The application downloads data from the World Bank database via API

GDP Choropleth Map of the World
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The application calculates Gini coefficient

If \( n \) is number of countries, \( x_i \) – GDP per capita of country \( i \):
\[ G = \sum_{i = 1}^n \sum_{j = 1}^n \big | x_i - x_j \big | \bigg / \bigg ( 2 n \sum_{i = 1}^n x_i \bigg ) \]

Gini index for GDP per capita (current US$) in 2015: 

library('WDI'); library('reldist')
DT <- na.omit(data.frame(WDI('all', 'NY.GDP.PCAP.CD', 
                             2015, 2015))[48:264, ])
head(DT, n = 2)

   iso2c     country NY.GDP.PCAP.CD year
48    AF Afghanistan       594.3231 2015
49    AL     Albania      3945.2176 2015

round(gini(DT[, 3]), 2)

[1] 0.64

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Calculated output example: 2015, current US$

See a map and test this app at aksyuk.shinyapps.io/worldmap_gdp/

Documentation: README.md

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