GIS and CAD tools, training, large scale 3d network analysisCardiff University Sustainable Places Research Institute
sDNA is world leading spatial network analysis software, compatible with both GIS and CAD.  We use the industry standard network representation to produce metrics that correlate to human health, community cohesion, land values, town centre vitality, pedestrian and cyclist flows, land use, traffic volumes, accidents and crime.

Research collaborators
Tongji University College of Architecture and Urban Planning

Recent Posts

Repairing split links is no longer necessary

In the soon-to-be-released sDNA3, it will no longer necessary to repair split links.  This looks like a departure from how sDNA used to work, so I’d better explain it. First, let’s clarify what we’re talking about.  A split link is … Continue reading

Network analysis for big data

Crispin gave an invited talk at Association for Geographic Information’s “GeoBig5: Big Data and You” conference on the links between spatial network analysis and big data. To summarize, Spatial network analysis leverages existing large datasets by extracting novel information from … Continue reading

Strategic urban scale models of pedestrian and cycle travel (Aesop 2015)

Crispin will be presenting sDNA models of pedestrian and cyclist travel at the Association of European Schools of Planning Conference, Prague, 14th July 2015.  As ever, get in touch if you would like to meet up.

3d network models for the prediction of cyclist flows (TPM 2015)

Crispin & Alain will both be at the Transport Practitioners Meeting in London, 2nd July 2015, talking about 3d network models for the prediction of cyclist flows. Short version: sDNA+ allows the modelling of link level cyclist flow models based … Continue reading

New Funding for sDNA Pedestrian and Cycle Model

sDNA has secured ESRC IAA funding (ESRC £20,000 + contributions in kind of £44,000) to work with three global transport consultancies and sustainable transport charity Sustrans on sDNA impact projects in the context of the positive active travel policy in Wales.   This … Continue reading


Crispin will be presenting the latest sDNA developments at GISRUK 2015.  His abstract describes (formally for the first time) the reasoning behind our continuous space algorithm. If you would like to catch up, he will be around for all three … Continue reading

Ironing out the kinks in angular network analysis

New research published on theoretical network analysis Spatially localized closeness and betweenness are the bread and butter of modern spatial network analysis, and in particular, spatially localized angular analysis has become something of a de facto standard.  But did you … Continue reading

Modelling cycle flows, collisions and hotspots for improvement – Sustrans seminar on sDNA (+ slides)

The slides for Crispin Cooper’s Sustrans seminar are available here.  Crispin gave a seminar at Sustrans Cardiff on sDNA models of cycle journeys, which can predict both flows of cyclists and risk of conflicts with motor vehicles, as well as map hotspots … Continue reading

sDNA Pedestrian Environment Review System (PERS) study presented at CIHT event

Ringo Chan of ARUP global consulting engineers presented an sDNA pedestrian footfall model for Leadenhall Street, London at yesterday’s Chartered Institution of Highways & Transportation event, “Planning for Pedestrians”. Ringo’s work makes use of Pedestrian Environment Review System (PERS) data both as a … Continue reading

Excellence in Spatial Planning Research Awards

Chinmoy Sarkar and Chris Webster recently won the Excellence in Spatial Planning Research award (academic category), for their work using sDNA to add urban morphometric data to the UK Biobank medical database. The Awards were presented by Trudi Elliott, Chief … Continue reading