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audit_transformation() — main function to audit a full
ZCTA → ZIP → County transformation pipeline and quantify
perturbation.transform_zcta_to_zip() — performs the first hop (ZCTA
→ ZIP) using equal-weight allocation across associated ZIPs.transform_zip_to_county() — performs the second hop
(ZIP → County) using HUD TOT_RATIO allocation.run_full_transformation() — convenience wrapper
executing both hops in sequence.prep_zip_zcta() — standardizes raw ZIP-ZCTA crosswalk
files for use in audits.prep_hud_crosswalk() — standardizes raw HUD ZIP-County
crosswalk files.get_zcta_baseline() — fetches ACS 5-year estimates at
ZCTA level via the Census API (requires tidycensus and a Census API
key).extract_perturbed_population() — extracts the
redistribution of population across receiving counties produced by the
transformation.plot_transformation_perturbation() — bar chart of
baseline vs recovered values with perturbation magnitude in
subtitle.create_audit_report() — generates all visualizations
for an audit.print and summary methods for
shellgame_audit objects.These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.