New Jersey State Plane
This example displays census tracts in New Jersey projected using a transverse Mercator projection, with an origin of 74° 30′ W and 38° 50′ N, as defined by the State Plane Coordinate System. The map is generated from TopoJSON data and rendered as SVG paths. It uses d3.geoPath with a d3.geoTransverseMercator projection, and the projection’s scale and translation are set automatically using the fitExtent method. Census tract polygons are colored light gray and highlight orange on hover.
AI-generated descriptionAn example of the New Jersey state plane, a transverse Mercator projection with an origin of 74° 30′ W and 38° 50′ N. The projections for each state are defined in the USGS publication, State Plane Coordinate System of 1983. This map shows census tracts; the data is available as TopoJSON in the U.S. Atlas project.
This example uses projection.fitExtent to set the projection’s scale and translate automatically from the displayed geometry.