jared 9238b04b69 feat(notes): concatenate notes; flag unavailable population
.notes_column now joins multiple per-row notes with '; '. Adds the
'No population denominator available for this gov type' note when
pop_source is 'unavailable'. Gracefully handles absent pop_source
(per_capita = FALSE). Two new tests: one corpus-level (census_f33
branch) and one synthetic unit test covering multi-note concatenation.
2026-04-29 17:03:05 -04:00

uscogdata

Curated R reader for the Civilytics US Census of Governments finance corpus.

Provides unit-level financial profiles, geographic rollups, and peer comparisons with auditable provenance and built-in cross-vintage correctness. Reads the published corpus (Hive-partitioned parquet + manifest.json) directly from Nextcloud via DuckDB httpfs — no local bulk downloads required.

Status

Under active development (Phase 2 of the cog_pipeline project). See ../cog_pipeline/docs/reader-specification.md for the reader contract this package implements.

Installation

# pak::pkg_install("gitea.civilytics.org/Civilytics/uscogdata")

Configuration

  • USCOGDATA_URL — corpus root URL (public Nextcloud share, trailing slash)
  • USCOGDATA_CACHE_DIR — optional override for the manifest cache directory
  • USCOGDATA_MANIFEST_TTL_SECS — optional manifest re-fetch TTL (default 3600)

Developer notes

Testing

The package ships a bundled fixture corpus at inst/extdata/fixture_corpus/ — a 3.6 MB two-year slice (2019 + 2020) of the full corpus covering all 50 states. tests/testthat/setup.R automatically points USCOGDATA_URL at this fixture, so the full test suite runs offline with no network dependency:

devtools::test()   # uses bundled fixture, no credentials required

Releasing against the live corpus

Before cutting a release, run the test suite against the published corpus to catch any drift between the fixture and the real data:

Sys.setenv(USCOGDATA_URL = "<published-corpus-url-with-trailing-slash>")
devtools::test()

When the live-corpus run is clean, strip the fixture from the built package by adding this line to .Rbuildignore:

^inst/extdata/fixture_corpus$

The test suite is URL-agnostic — setup.R falls back to USCOGDATA_URL when the bundled fixture is absent, so no test code changes are needed for the release run or after stripping the fixture.

S
Description
R reader for the Civilytics US Census of Governments finance corpus
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