Concatenating data.table variables
Three data.tables containing Ebola case numbers reported in Guinea to the World Health Organisation for three weeks at the height of the 2014 Ebola outbreak have been loaded into your R session: ebola_W50, ebola_W51, and ebola_W52. Your goal is to create a single data.table containing the case numbers in each region of Guinea across all three weeks.
Это упражнение является частью курса
Joining Data with data.table in R
Интерактивное практическое упражнение
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# Concatenate case numbers from weeks 50 and 51
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