https://chollinger.com/feed.xml
Software Engineering, GNU/Linux, Data, GIS, and other things I like.
Jul 14, 2026
ZIP codes are a bad spatial abstraction
ZIP codes are delivery routes, not polygons. See how SkaldMaps combines ACS and other sources using ZCTAs, HUD-USPS crosswalks, spatial joins, and DuckDB.
None found.
If you are the site owner, you can add <link rel="me" ...> elements to link to your other sites or profile pages.
These will appear after the next crawl.
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Web feeds (RSS feeds or Atom feeds) will appear here. If you are the site owner you can add an OPML blogroll to recommend other blogs or websites.
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If you'd like to promote this feed you can add it to your OPML blogroll. You'll appear here as a subscriber after the next crawl if your site is part of the network.
This feed scored 16 point in our rating.
A feed can increase its score (and appear higher on our list) by implementing an OPML blogroll, adding a title, description, categories, and more.
cats - 0See criteria
description - 3
feedlangs - 1
hascontent - 0
hasposts - 3
postcats - 0
promoted - 5
promotes - 0
relme - 0
title - 3
website - 1