Posts

Geospatial Data in R
Introduction In this post, I am going to show how one might go about analysing the Bikeshare use in New York city.
Last updated on Sep 15, 2024 280 min read R, teaching
Geospatial Data in R
Transit Accessibility Using GTFS
Introduction Understanding the reach and effectiveness of public transit is important to understand how urban environments are accessible for different groups of people.
Last updated on Nov 18, 2022 20 min read transportation, R
Transit Accessibility Using GTFS
Cleaning Spatial Networks
Introduction Some transportation networks are intuitive to understand as networks. We can easily visualize intersections as nodes and roadways as edges in a road network.
Last updated on Oct 26, 2022 11 min read transportation, new-urban-analytics
Cleaning Spatial Networks
Isochrones from Routing Engines (OSRM)
Introduction In other posts, I have shown how to use external servers (google, craigslist etc.) to access information. You can also query a local (on your computer) server and your R session acts like a client (e.
Last updated on Jan 25, 2022 4 min read transportation, new-urban-analytics
Isochrones from Routing Engines (OSRM)
Exploratory Data Analysis and Visualisation
Some exploratory graphics using air pollution data in the US.
Last updated on Aug 26, 2024 546 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