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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.
Health stats visible at Monitor.