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The New Science of Cities, by Mike Batty

In this book, I suggest that to understand cities we must view them not simply as places in space but as systems of networks and flows. To understand space, we must understand flows, and to understand flows, we must understand networks—the relations between objects that comprise the system of the city. Drawing on the complexity … Continued

Cities, Brains, Percolation

At ECCS ’13 this morning, Elsa Arcaute, Lecturer in Urban Modelling in CASA, is talking about our work on city size using percolation theory which has analogies to Hernan Makse’s work on percolation and the brain. Click here for the programme and the paper in the Arxiv on which is it based. You can also … Continued

Gravity v Radiation Models

For many years, almost from the time when Newton first presented his laws of gravitation, speculations and applications of the gravity model to human interactions have been made. In the 19th century, Carey and Ravenstein led the way with Reilly, Zipf, Stewart and Warntz and then Voorhees making major contributions in the early to mid … Continued

Plotting Every Crash on Every Road 1999-2010

Jason Dykes showed this at the GeoVisualisation Meeting in Oxford on August 30th: A map of road crashes in Great Britain (not the UK) from 1999 to 2010. It mirrors of course the road network and the density of population but it is a remarkable graphic. It was made by the BBC and first published … Continued

Plotting and iGraph on Lion and Mountain Lion

After giving up on Gephi (again, I really should learn), I decided it was time to get to grips with Python and iGraph since I really need to produce multiple iterations of a graph. The matmos at CASA have, of course, been touting Python for ages, but I’ve just not had the time/incentive to install … Continued

Europe- a millennia in ten minutes

An interesting movie is currently trending visualising the last thousand years of European history and conflict. Europe resembles a large game of Risk or Civilization. Such games typically end with a single large empire, whilst the dynamics of European history show the larger empires forming only fleetingly, soon to be dissolved by the re-emergence of … Continued

Pulse of the City (reboot)

As I get to better grips with the full richness of the Oyster data set and the complexity of the TfL network it’s gradually getting easier to build better visualisations. One of the ones that I’ve wanted to revisit for quite some time was my original ‘pulse of the city’ animation (you can see it … Continued

A Week in the Life of London’s Public Transit System

I’ve been meaning to post this for ages but have had a great deal on my plate (more posts and visualisations to follow in the next week I hope) so this has kept slipping, together with the six or seven other ‘draft’ posts I’ve got going. Anyway, this visualisation shows average entries at each and every Underground, … Continued

Big Data, Complexity, Networks at the German Physical Society

  Full Details of the Meeting are Here Various people from UCL and Kings are contributing to this meeting in Berlin. Mike Batty from CASA is talking on how cities and their evident complexity require big data which is rapidly becoming available, Phil Treleavan from CS at UCL is talking about experimental computational finance in … Continued

Understanding and Managing Complex Systems, 5 March 2012

The Royal Netherlands Academy of Arts and Sciences (KNAW) and the Netherlands Organisation for Scientific Research (NWO) are organising this seminar on 5th March 2012 starting at 9-30am at Trippenhuis, Kloveniersburgwal 29, the Netherlands.   Mike Batty is talking about Complexity in Cities: Are Cities Becoming More and More Complex?, Martin Novak is talking about … Continued

Complexity Theory in Cities

Here is a  new book on complexity and cities entitled “Complexity Theories of Cities Have Come of Age: An Overview with Implications to Urban Planning and Design” edited by Juval Portugali, Han Meyer, Egbert Stolk and Ekim Tan with the intriguing title that what we do has come of age. Well maybe, maybe not, I … Continued

Martin Dodge, ex-CASA, wins AAG Meridian Prize for his Book Code/Space

Martin was an RA in CASA and then lecturer from 1996 to 2004. He is now Senior Lecturer in Geography at the University of Manchester. He coauthored the book with another friend of CASA, ROb Kitchin of NUI. Here is the citation On behalf of the Association of American Geographers, …, Code/Space: Software and Everyday … Continued

Satellite Meeting at ECCS 2012: Complexity in Spatial Dynamics

Satellite Meeting: Complexity in Spatial Dynamics (COSMIC) Location: Brussels, 5th of September 2012 Organizers: Peter Nijkamp, Michael Batty, Stewart Fotheringham, and Emmanouil Tranos Background New bottom up, digital data collected for entire populations, has started being utilised in urban science and geospatial analysis for understanding and modelling urban dynamic processes. Such data will provide dramatically … Continued

Open Data & Visualisation

  In one of the more unusual invitations that I’ve received over the past few years, I was asked to speak about visualisation and open data at Transport Ticketing 2012, currently happening down in South Ken. Interestingly, in spite of my various posts on visualisation and work with a variety of companies on the spatial … Continued

London (Re)generation AD: Architectural Design

The Bartlett’s Michael Batty, Matthew Carmona, Edward Denison, Murray Fraser, Matthew Gandy, and Hilary Powell all feature in current issue of Architectural Design, a lively, thought-provoking exploration of the contemporary regeneration of London, edited by David Littlefield.   Plans to regenerateEast Londonand transform the capital are integral to the vision of the London 2012 Olympic … Continued

Simulating the Spread of Infectious Diseases in Large Cities

Anders Johansson, Mike Batty and colleagues’ paper in The Lancet Infectious Diseases is published online today. There they are exploring how models for simulating crowds can be extended to deal with the spread of infectious diseases in  high density environments.   Details of the paper follow: The Lancet Infectious Diseases, Early Online Publication, 16 January … Continued

MapThing v1.0 Processing Library

One of the objectives of the COSMIC project is to “extend our current techniques of visualising complex spatial systems… [to] enable a wide range of stakeholders to be involved both in understanding such complexity and using it in policy analysis.” Normally, this type of task would mean identifying a set of existing tools and producing some … Continued

The ARCADIA Employment Model

Duncan Smith, Camilo-Vargas Ruiz and myself (Mike Batty) have completed the employment model for the Arcadia Integrated Assessment Model. The model is unique in that it is built at the regional level for three UK regions – London, the South East and East at the level of wards – some 3202 in all, which dovetails … Continued

Representing Social Flows

The flow analogy is central to our work in COSMIC, Mechanicity and related projects which argue that cities should be considered as first and foremost as flow systems, not as locational patterns. This is massive break with the past as it presumes that we cannot understand locations without knowing about flows. It blows up the … Continued

All I Want For Christmas …

… is the biggest, fattest book I have ever contributed to, almost unknowingly. Imagine my surprise when the  large parcel, almost too heavy for the postman to carry, arrived on my desk, containing a copy of the 1465 page Technical Report of the UK National Ecosystem Assessment. What had I done to deserve this? Well … Continued

One Days Worth of Traffic in Milton Keynes

Nice movie of traffic moving and link volumes in Milton Keynes by Joan Serras working on our SCALE project. Notice the peak and the fact that as is quite usual for such traffic, the morning peak is more accentuated than the evening peak. Joan is working to add capacity to our ARCADIA model and itheexploring … Continued

Scaling in Social Systems

A one day EPSRC-funded workshop (at which yours truly presented) in Oxford at the Complex Agent-Based Dynamic Networks group (CABDyN) at the Said Business School (1st December 2011) had five interesting speakers all talking about the new social physics of cities and economies, focusing on regularities and irregularities in the structure and dynamics of these … Continued

Agent-Based Models of Geographical Systems

Provides a complete reference guide for understanding how to apply ABM to geographical systems
Presents the latest ideas and applications using ABM
Addresses the issue of applying ABM in a spatial context. This unique book brings together a comprehensive set of papers on the background, theory, technical issues and applications of agent-based modelling (ABM) within geographical systems. This … Continued

Changing Rank-Size Distributions over 24 Hrs on London Tube and Rail

Inspired by Jon Reades’ great visualizations of flows using the TfL Oyster card data, we are now starting to examine the statistical properties of the data, beginning with an analysis of what goes on in the nodes. The data yields 666 hubs or nodes which have entry and exit volumes – in graph theoretic terms … Continued

Pulse of the City

I’ve been working with the TfL data over the past few weeks to better understand the geographical distribution of journeys and how this affects the load on individual segments across the transport network. In other words, we all know that some parts of some trips are particularly unbearable, and that disruptions in those areas (e.g. … Continued