शुरू करेंमुफ़्त में शुरू करें

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.

यह अभ्यास पाठ्यक्रम का हिस्सा है

Joining Data with data.table in R

पाठ्यक्रम देखें

अभ्यास निर्देश

  • 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.

इंटरैक्टिव व्यावहारिक अभ्यास

इस अभ्यास को इस नमूना कोड को पूरा करके आज़माएँ।

# Split gdp by industry and year
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