Returns the built-in simplified Ontario Public Health Unit (PHU) boundary
layer shipped in inst/extdata/phu_simple.rds. This layer is intended as
a lightweight, always-on reference outline for the Shiny app and other
mapping code. It is NOT a substitute for retrieve_phu(): use
retrieve_phu() when you need full-resolution, authoritative PHU
boundaries or up-to-date provenance.
Value
An sf object of 34 simplified PHU boundary MULTIPOLYGONs, with
source_url, source_name, and retrieved_at attributes inherited from
the full-resolution source.
Details
The built-in file was produced by fetching full-resolution PHU boundaries
from the LIO Open Data REST service, reprojecting to EPSG:3161
(Ontario MNR Lambert), simplifying with sf::st_simplify(dTolerance = 250, preserveTopology = TRUE), reprojecting back to the source CRS, and
casting to MULTIPOLYGON. The source data are distributed under the
Open Government Licence - Ontario.
Examples
phu_simple <- retrieve_phu_simple()
nrow(phu_simple)
#> [1] 29