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Grid Sampling on Census Tracts - Contours from Sampling

✓ Published3🌍 Public
CCurran Kelleher
Last edited May 17, 2024
Created on May 8, 2024

This interactive map displays the distribution of the Black population across New York City census tracts. It creates and renders contour polygons derived from a grid-sampled raster of demographic data, which is then blurred and thresholded using D3’s `contours` and `blur2` APIs. The contours are converted to GeoJSON via Turf, while the base layer uses `geoOrthographic` and `geoPath`. County data comes from the 2023 Census Tracts shapefile, enriched with ACS demographic estimates.

AI-generated description

Data for New York census tracts, downloaded from https://www.census.gov/cgi-bin/geo/shapefiles/index.php?year=2023&layergroup=Census+Tracts and processed using https://mapshaper.org/.

Data resides in Gist: New York City Census Tracts.

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MIT Licensed

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