Spatial Enclosure Analysis with GIS
I've been using GIS to help analyze spatial enclosure of existing development by using street centerline data and building footprint data.
In short, the code will calculate the spatial enclosure by analyzing the location of each building in reference to the street centerline. Attached is an example screen shot of the resulting data from the Portage Park neighborhood in Chicago; data courtesy of Emily Talen.
Here's a couple shortcomings of the analysis:
1. Does not account for "missing teeth" (this could be done but would be very complicated to code)
2. Does not account for the presence of boulevard trees and the benefits they can create relating to spatial enclosure.
I think this takes the whole Walk Score idea and adds another component to it.
I'm looking to test this more, so if anyone has an area that they would be interested in seeing the results send me an email. I would really like to get data for an area with really good urban form as well as an area typical of low density sprawl.
Google Earth files have now been attached for viewing.
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