About this 3D model

This pair of prism maps offers a comparison of population density and voter turnout by election district for the city of Binghamton, NY. The top and bottom of the reference walls represent the upper and lower bounds of the data as specified in the `.scad` scripts. The population density scale ranges from `0` to `5000` people per square kilometer; the voter turnout ratio scale ranges from `0` to `1` (100%). --- *For a customizable prism map with broader appeal, see my [Contiguous United States](http://www.thingiverse.com/thing:209005) population density model.* --- **Data Provenance** Binghamton election district boundaries derived from Broome County election district boundaries retrieved from the [Broome County GIS Portal](http://broomegis.co.broome.ny.us/website/gisweb/gisrequest.htm). Boundary shapefile attributes include 2010 census total population counts. Approximate election district areas calculated with [QGIS](http://qgis.org/) using `$area / 10764000` to convert square feet to square kilometers. Vote counts derived from "Whole Number" of votes in the 2013 Binghamton mayoral election, as tabulated by district on pages 88 and 89 of the [election results](http://www.gobroomecounty.com/files/elections/pdfs/2013%20GENERAL%20ELECTION%20RESULTS.pdf) provided by Broome County. Population density (`ppsqkm`) calculated as 2010 total population divided by area, yielding population per square kilometer. Voter turnout ratio (`vt_pop`) calculated as 2013 vote count divided by 2010 total population. Does not account for change in population between 2010 and 2013. Does not account for difference between total population and population of eligible voters. **Methodology** The `ppsqkm` and `vt_pop` values described above were created as attributes of a Binghamton election district shapefile named `bgm-ed`. Scripts to generate extruded 3D models of these maps were created with [prismap](https://github.com/anoved/prismap) and compiled to STL with [OpenSCAD](http://www.openscad.org/). To reduce file size, OpenSCAD's ASCII output was converted to binary format using [Meshlab](http://www.meshlab.org/). **Customizable** The OpenSCAD scripts generated by prismap are compatible with Thingiverse Customizer. Click *Open in Customizer* to plug in your own data for Binghamton's election districts (be sure to adjust the upper and lower bounds of the data range accordingly), or use prismap to create extruded prism maps of your own study area.