Washington D.C. has an excellent catalog of GIS data that is made available to the public at DC GIS. The website provides data on all sorts of issues ranging from criminal activity to building permits. Also the website contains spatial files that can be used to create detailed and professional maps. For this post I collected data on 2011 crimes within the city. I will show how to import the data into Cartographica, how to geocode the crime incident data, how to search for specific types of crimes, and how to create Kernel Density Maps. The first step in …