Filter Shape to Geographies Along Border
seam_geom(adj, shp, admin, seam, epsg = 3857)zero indexed adjacency graph
tibble to subset and where admin column is found
quoted name of administrative unit column
administrative units to filter by
numeric EPSG code to planarize to. Default is 3857.
subset of shp
data('rockland')
data('orange')
data('nrcsd')
o_and_r <- rbind(orange, rockland)
o_and_r <- o_and_r |>
geo_filter(nrcsd) |>
geo_trim(nrcsd)
adj <- adjacency(o_and_r)
seam_geom(adj, shp = o_and_r, admin = 'county', seam = c('071', '087'))
#> Simple feature collection with 24 features and 25 fields
#> Geometry type: GEOMETRY
#> Dimension: XY
#> Bounding box: xmin: -8247177 ymin: 5049265 xmax: -8235418 ymax: 5060742
#> Projected CRS: WGS 84 / Pseudo-Mercator
#> First 10 features:
#> state county tract block GEOID waterpct pop pop_white pop_black
#> 486 36 071 013800 3031 360710138003031 0 0 0 0
#> 660 36 071 013800 3066 360710138003066 0 0 0 0
#> 668 36 071 013800 3045 360710138003045 0 0 0 0
#> 937 36 071 013900 3113 360710139003113 0 0 0 0
#> 2478 36 071 013800 3032 360710138003032 0 0 0 0
#> 4278 36 071 013900 3108 360710139003108 0 0 0 0
#> 4448 36 071 014900 1091 360710149001091 0 0 0 0
#> 5332 36 071 013800 3036 360710138003036 1 0 0 0
#> 5334 36 071 013800 3044 360710138003044 1 0 0 0
#> 5533 36 071 013800 3043 360710138003043 1 0 0 0
#> pop_hisp pop_aian pop_asian pop_nhpi pop_other pop_two vap vap_white
#> 486 0 0 0 0 0 0 0 0
#> 660 0 0 0 0 0 0 0 0
#> 668 0 0 0 0 0 0 0 0
#> 937 0 0 0 0 0 0 0 0
#> 2478 0 0 0 0 0 0 0 0
#> 4278 0 0 0 0 0 0 0 0
#> 4448 0 0 0 0 0 0 0 0
#> 5332 0 0 0 0 0 0 0 0
#> 5334 0 0 0 0 0 0 0 0
#> 5533 0 0 0 0 0 0 0 0
#> vap_black vap_hisp vap_aian vap_asian vap_nhpi vap_other vap_two place
#> 486 0 0 0 0 0 0 0 99999
#> 660 0 0 0 0 0 0 0 99999
#> 668 0 0 0 0 0 0 0 99999
#> 937 0 0 0 0 0 0 0 82750
#> 2478 0 0 0 0 0 0 0 99999
#> 4278 0 0 0 0 0 0 0 82750
#> 4448 0 0 0 0 0 0 0 99999
#> 5332 0 0 0 0 0 0 0 99999
#> 5334 0 0 0 0 0 0 0 99999
#> 5533 0 0 0 0 0 0 0 99999
#> geometry
#> 486 MULTIPOLYGON (((-8237395 50...
#> 660 MULTIPOLYGON (((-8238303 50...
#> 668 MULTIPOLYGON (((-8238234 50...
#> 937 MULTIPOLYGON (((-8241105 50...
#> 2478 MULTIPOLYGON (((-8237787 50...
#> 4278 MULTIPOLYGON (((-8241634 50...
#> 4448 MULTIPOLYGON (((-8247157 50...
#> 5332 MULTIPOLYGON (((-8236666 50...
#> 5334 MULTIPOLYGON (((-8236121 50...
#> 5533 MULTIPOLYGON (((-8236047 50...