Census Tract Centroids using AutoLISP

AutoLISP is a powerful tool for expediting repetitive tasks in AutoCAD. Seeking to find real world data to use in architecture, I hit upon the idea of using census data to create forms. While I did not end up pursuing this as a design tool I did develop several programs to graphically interpret census data. One of the first programs I devised was a simple geolocation program to create circles at coordinates.
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