Perftesting

Jul 24, 2018 - 1 minutes
I’ve always been interested in how PySAL stacks up with NetworkX for building the dual graph of polygonal lattices, so I did some perftesting. This is by far the most common spatial operation I do on a day to day basis, and it looks like PySAL’s constructors still are the fastest for cases where we can assume planarity. But, with how simple the geopandas-only solution is, I look foward to the day when the geopandas. Read more ...

Challenge in Science

Apr 20, 2018 - 10 minutes
I just finished attending the 2018 GIS Research UK conference at Leicester University. I presented twice; once on some new methods in spatial clustering and once for the CDRC brexit data analysis competition. I had a really good time participating in the data analysis competition, and it struck a chord with me reflecting on quite a few conversations I’ve had with my friend & colleague Taylor Oshan and something Morton O’Kelly said at this year’s annual American Association of Geographers meeting. Read more ...

GISRUK I: CDRC Brexit Analysis Competition

Apr 18, 2018 - 2 minutes
My entry in the Consumer Data Research Center’s Brexit Data Competition is called “Tension Points: A Theory & Evidence” (static), which I talked about at the 2018 GISRUK conference There is an abstract describing some of the work that I submitted to get to the final round, but if you’re computationally inclined, you’ll find everything sufficient to replicate my modelling & analysis in this Jupyter Notebook (raw). You’ll need scikit-learn, pystan, statsmodels, and geopandas at minimum to run. Read more ...