Heatmap

Plotting 2000 random locations in . Try zooming in, or adjusting the radius/intensity of the blobs using the sliders.
Uses an HTML5 canvas element, and is unlikely to work in older browsers, so try a new one.

Dataset: -- Choose Dataset -- National - Historic Sites National - Bridge Safety National - Farmers Markets National - Google Places National - Greenhouse Gas Emissions National - Meth Labs National - Nursing Homes National - Public Schools National - Toxic Pollution Emissions National - Toxic Release Chemicals National - Yelp Reviews Anchorage, AK - Crime Reports CA - Cleanup and Permitted Sites San Francisco, CA - Crime Reports San Francisco, CA - Maintenance Requests San Francisco, CA - Property Values San Francisco, CA - Trees San Jose, CA - Building Permits Washington, DC - Crime Reports Miami, FL - Crime Reports Atlanta, GA - Crime Reports Chicago, IL - Bike Racks Chicago, IL - Building Permits Chicago, IL - Business Licenses Chicago, IL - Catholic Churches Chicago, IL - Crime Reports Chicago, IL - Restaurant Inspections Indianapolis, IN - Crime Reports KY - Car Accidents KY - Health Enterprises Network KY - Political Contributors KY - Sex Offenders Frankfort, KY - Property Values Louisville, KY - Arts and Cultural Attractions Louisville, KY - Building Permits Louisville, KY - Business Licenses Louisville, KY - Crime Reports Louisville, KY - Foreclosures Louisville, KY - Open Building Permits Louisville, KY - Property Maintenance Louisville, KY - Property Values Louisville, KY - Real Estate Louisville, KY - Recent Residential Home Sales Louisville, KY - Restaurant Dining Guide Louisville, KY - Restaurant Health Ratings Louisville, KY - TARC Bus Stops Boston, MA - 311 Calls Albuquerque, NM - Crime Reports New York, NY - Restaurant Inspections New York, NY - Service Calls Cincinnati, OH - Crime Reports Portland, OR - Business Licenses Fort Worth, TX - Crime Reports Richmond, VA - Crime Reports Category: Select Dataset First
Number: 1000 2000 3000 4000 5000

Code largely copied/pasted from sloweb.org.uk and websitedev.de and ScraperWiki.