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sdc.redistribute moves measured values from a
source set of polygons onto a target set that does not
share the same boundaries.
library(sdc.redistribute)
data(sdc_example)
# Area-weighted: split tract population onto neighborhoods.
redistribute_direct(sdc_example$source, sdc_example$target, extensive = "pop")
#> Simple feature collection with 3 features and 2 fields
#> Geometry type: POLYGON
#> Dimension: XY
#> Bounding box: xmin: 0 ymin: 0 xmax: 4 ymax: 2
#> Projected CRS: WGS 84 / Pseudo-Mercator
#> nbhd geometry pop
#> 1 N1 POLYGON ((0 0, 1.5 0, 1.5 2... 90
#> 2 N2 POLYGON ((1.5 0, 2.5 0, 2.5... 50
#> 3 N3 POLYGON ((2.5 0, 4 0, 4 2, ... 60
# Dasymetric: weight the split by parcels (here, by unit count).
redistribute_parcels(
sdc_example$source, sdc_example$target, sdc_example$parcels,
extensive = "pop", weights = "units")
#> Simple feature collection with 3 features and 2 fields
#> Geometry type: POLYGON
#> Dimension: XY
#> Bounding box: xmin: 0 ymin: 0 xmax: 4 ymax: 2
#> Projected CRS: WGS 84 / Pseudo-Mercator
#> nbhd geometry pop
#> 1 N1 POLYGON ((0 0, 1.5 0, 1.5 2... 90.90909
#> 2 N2 POLYGON ((1.5 0, 2.5 0, 2.5... 43.90572
#> 3 N3 POLYGON ((2.5 0, 4 0, 4 2, ... 65.18519Use extensive for counts (totals are preserved) and
intensive for rates (area-weighted means).
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