Matt Duckham
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duckham.org
Matt Duckham
@duckham.org
Academic: Professor at RMIT University, GIScience, spatial algorithms, AI, and databases, ontologies http://gkl.rmit.melbourne
Author: GIS 3e http://gisacp.duckham.org
Me: gender equity, wheelchair user, food, new music
My latest “GIS in 60s” video, on Dijkstra’s shortest paths algorithm. #GISchat

I found this one pushed the limits of what I can explain in 60s. So I’m interested to hear if you think it works or not. But even if not, I did learn some new #AfterEffects tricks along the way and it was fun to make.
January 10, 2025 at 6:28 AM
The Douglas-Peuker algorithm for cartographic line simplification in 60s #GISchat
January 7, 2025 at 3:49 AM
Latest in my “GIS in 60s” videos tackles one of the most fundamental geometric operations in a #GIS: detecting intersections between line segments. #GISchat

The full set of videos is here: youtube.com/playlist?lis... #AfterEffects #PremierePro #Illustrator
December 30, 2024 at 7:45 AM
Quadtree addresses in 60s, part of the (slowly) growing series at m.youtube.com/@gisacp #gischat
December 10, 2024 at 8:30 PM
The simple (naive) k-means clustering algorithm is too inefficient to be used in practice. But it’s useful for grasping the idea behind k-means (and as my first attempt at explaining an algorithm in one minute!) #gischat #geoai
December 7, 2024 at 7:09 AM
GIS in 60 seconds video no. 3 on schematic maps #gischat. I’ve also set up a channel with all videos m.youtube.com/@gisacp
December 3, 2024 at 9:50 PM
The modifiable areal unit problem (MAUP) explained in bsky 60 seconds. The second in the new series to accompany my #GIS book. #gischat
November 30, 2024 at 10:19 AM
Inspired by the bsky 60s rule for videos, I’ve started a series of short explainers to accompany my #GIS book. First up: the famous four intersection model! #gischat #geoai
November 27, 2024 at 6:31 AM