British Columbia display boundary for Figure 3

Adapted from Statistics Canada, 2021 Census boundary files (provincial boundary, PRUID 59; DGUID 2021A000259), 2021. This does not constitute an endorsement by Statistics Canada of this product.
Statistics Canada Open Licence: https://www.statcan.gc.ca/en/terms-conditions/open-licence

Source geometry: BC.shp supplied with the manuscript reproduction inputs; original CRS EPSG:3347.
Display processing: transform to EPSG:3005; sf::st_simplify(dTolerance=100, preserveTopology=TRUE); sf::st_make_valid; round to a 1-meter coordinate grid using st_set_precision(1) and st_make_valid.
The validity repair resolves nested shells produced by simplification. The 1-meter grid compresses display coordinates without increasing the 100-meter simplification tolerance materially.
No deliberate area/size-based removal of offshore polygons was performed.
This is a display-only outline, not an analysis mask. Do not use it to recompute FWI cell inclusion, values, or sample counts. Full-resolution scientific inputs remain unchanged.
Area change from the projected original: -0.010555 percent.
Output is valid, non-empty sf geometry in EPSG:3005; attributes record display_only, tolerance_m and coordinate_grid_m.
Read with readRDS(system.file("figures", "BC_display_boundary.rds", package = "SSIMmap")).
