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Splitting by multiple groups

gdp_by_industry_oceania contains the GDP generated by the agriculture and tourism industries in both 1995 and 2010. Your goal is to create a wide format data.table containing columns of GDP for each year and industry.

Cet exercice fait partie du cours

Joining Data with data.table in R

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Instructions

  • Print gdp_by_industry_oceania.
  • Convert gdp_by_industry_oceania to a wide format with each country as a row, splitting the "gdp" column so that the result has columns containing the gdp for each industry and each year.

Exercice interactif pratique

Essayez cet exercice en complétant cet exemple de code.

# Split gdp by industry and year
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