Tabulating using bigtable
The bigtabulate package provides optimized routines for creating tables and splitting the rows of big.matrix objects. Let's say you wanted to see the breakdown by ethnicity of mortgages in the housing data. The documentation from the website provides the mapping from the numerical value to ethnicity. In this exercise, you'll create a table using the bigtable() function, found in the bigtabulate package.
This exercise is part of the course
Scalable Data Processing in R
Exercise instructions
The character vector race_cat is available in your workspace.
- Load the
bigtabulatepackage. - Call
bigtable()create a variable calledrace_table. - Rename the elements of
race_tabletorace_catusing thenames()function.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Load the bigtabulate package
___
# Call bigtable to create a variable called race_table
___ <- ___(mort, "borrower_race")
# Rename the elements of race_table
___(race_table) <- ___
race_table