Posts

Exploratory Data Analysis and Visualisation
Some exploratory graphics using air pollution data in the US.
Last updated on Aug 14, 2025 565 min read new-urban-analytics, air-quality
Exploratory Data Analysis and Visualisation
Intersection Density From OSM using QGIS & R
Intersection Density is often used as an indicator of urban form in travel behaviour and urban design. In this post, I detail a way to calculate this indicator by leveraging OpenStreetMap data. I also focus on how to link R & QGIS as an illustration.
Last updated on Jan 21, 2022 10 min read new-urban-analytics, urban-form
Intersection Density From OSM using QGIS & R
Analysing Free Form Text
Free form text is ubiquitous in planning, including plans, regulations, meeting minutes, and transcripts, etc. This is a short introduction to analysing such text quantitatively.
Last updated on Aug 31, 2020 15 min read new-urban-analytics
Analysing Free Form Text
Matching Messy Texts
Using messy text fields to create some structure out of the datasets.
Last updated on Aug 24, 2020 14 min read new-urban-analytics, data-munging
Matching Messy Texts
Surveillance, Sensor Networks and COVID-19 Pandemic
The following is a transcript for a podcast as part of the series called “Viewpoints on Resilient and Equitable Responses to the Pandemic" produced by Center for Urban and Regional Studies.
Apr 19, 2020 6 min read
Surveillance, Sensor Networks and COVID-19 Pandemic
Unsupervised Clustering
Pattern recognition
Mar 20, 2020 9 min read machine-learning, urban-change
Unsupervised Clustering
Some Issues with Land Suitability Analysis
In 2018, as I was setting up this website, I had a conversation about land suitabilty analysis over email with Lew Hopkins, who was my doctoral advisor when I was at Illinois.
Mar 16, 2020 7 min read land-suitability
Urban Morphology & Landscape Metrics
Creating urban landscape metrics
Mar 12, 2020 16 min read R, teaching
Urban Morphology & Landscape Metrics
Land Suitability Analysis
Land Suitability Analysis using Multi Criteria Decision Making
Mar 6, 2020 14 min read R
Land Suitability Analysis
Basic Raster Operations in R
Basic Raster Operations in R
Feb 27, 2020 11 min read
Basic Raster Operations in R