Split

To calculate the proportions for all years, you will use the function female_residence_prop() defined in the previous exercise along with three other functions:

split(): To "split" the mort data by year
Map(): To "apply" the function female_residence_prop() to each of the subsets returned from split()
Reduce(): To combine the results obtained from Map()

In this exercise, you will "split" the mort data by year.

Este exercício faz parte do curso

Scalable Data Processing in R

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Instruções do exercício

Split the row numbers of the mortgage data by the "year" column and assign the result to spl.
Call str() on spl to see the results.

Exercício interativo prático

Experimente este exercício completando este código de exemplo.

# Split the row numbers of the mortage data by year
spl <- ___(1:nrow(___), mort[, ___])

# Call str on spl
___

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