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ae719d7a106f49d989ce50a7e2c58b62
Mass Crime Map with circle size corresponding to crime total count
This map shows the total crime count for each township in Massachusetts, with circle size proportionally scaled to the crime total using d3.scaleSqrt. The visualization combines town boundary paths rendered via d3.geoPath with a d3.geoAlbers projection, overlaid with crime data points positioned by longitude and latitude. Tooltips display city name, county name, and formatted crime counts. The crime data originates from FBI 2016 statistics, while geographic boundaries come from MassGIS shapefiles converted to Topojson. The visualization is built with React, D3 v5, and SVG rendering.
AI-generated descriptionThis Map show Crime total in different township of Massachusetts
original crime data is from FBI 2016 download from here
Geo Shape file are from here
The download Shape file did not contain coordination. Therefore, it is first converted to geojson by ogr2ogr
Geojson then reprocessed by mapshaper to Topojson.
Topojson file is loaded to Github gist
Crime data csv is loaded to gist
Circle size is corresponding to crime total