10 November, 2010
These are the slides from the presentation that I gave to the BCS Geospatial SG.
The talk abstract is:
Here is a useful party trivia: as a form of human communication, maps pre-date text by thousands of years – some early spatial depictions are 25,000 years old, whereas writing emerged only 4000 years ago. When it comes to computing, the reverse is true: the first wide use of computing is from the early 1950s, whereas the first effort to create a GIS only started in 1966. There are good reasons for this, chief among them is the complexity of handling geographical information in digital computers. An adverse impact of this challenge is that for many years geospatial technologies developers focused on functionality and not on the interaction with end-users. The result of this focus is that while word processors and spreadsheets became popular in the early 1980s, only with the emergence of ‘Web Mapping 2.0′ in 2005, GIS and geospatial technologies became more popular, albeit far from universally usable.
The talk covered interaction and user aspects of geospatial technologies, pointing to issues that permeate the usability and usefulness of geographical information itself (e.g. why ESRI shapefile is a popular format despite its drawbacks?), the programming of geospatial technology (e.g. why OGC WMS did not spark the mashup revolution, while Google Maps API did?) and the interaction of end users with desktop and web-based GIS.
And the talk happened at the same day in which the excellent Third Workshop on the Usability of Geographic Information was running at the Ordnance Survey.
31 March, 2010
Finally, after 2 years in the making, Interacting with Geospatial Technologies is out. It is the first textbook dedicated to usability and Human-Computer Interaction (HCI) aspects of geographical information technologies. It covers desktop, Web and mobile applications and how they can be designed so they are more effective, efficient, error-free, easy to learn and enjoyable, which is one version of the 5 E’s of usability.
I started thinking about the book in 2004, when I realised that the most recent academic books dedicated to HCI and GIS were published in 1993 and 1995. These are respectively David Medyckyj-Scott and Hilary Hearnshaw’s Human Factors in Geographic Information Systems and the collection of papers from the NATO workshop Cognitive Aspects of Human-Computer Interaction for Geographic Information Systems, edited by Tim Nyerges, David Mark, Robert Laurini, and Max Egenhofer. While these books and the collections of papers in them are still valuable, it must be noted that in the early 1990s, Web-based GIS was just starting to appear, desktop GIS was fairly basic, mobile GIS was not even experimental and GIS trade journals argued about which UNIX workstation is the best for GIS.
Apart from these books, the proceedings of COSIT (Conference of Spatial Information Theory) are also valuable sources of academic research on spatial cognition and other principles of geographical and spatial information, and there are also many papers in academic journals about GIS.
However, not much attention was paid to everyday use of geographical information technologies, and no textbook included an introduction in a form accessible to postgraduate students and software developers. So, after complaining in various conferences that there is a clear need for such a book, I started working on it. It was an interesting process to identify suitable authors and encourage them to contribute to the book.
While offering the breadth of several authors who specialise in different aspects of the field, I think the textbook is coherent and consistent, and its style both accessible and readable. The editing process was more active and time-sensitive than is often the case in academic books, to ensure that the textbook is usefully up-to-date. On UCL’s MSc in GIS, a recent course based on the textbook was well received by students.
The book covers the principles and the practical aspects of interaction with geospatial technologies. There are sections about spatial cognition, cartography, user-centred design and usability engineering – here is the table of contents.
So, now you can get your own copy – and any feedback is welcomed.
8 October, 2008
Over the summer, one of my students, Chris Osborne, worked together with Nestoria to create a demonstration of a mash-up that can help users find where they can live, i.e. rent or buy a home, at a given travel-time distance from a given underground or DLR station, assuming that they are using the network to commute. Building on the concepts that MySociety developed in their travel-time maps, Chris created the application by screen-scraping the journey planner of Transport for London and integrated it with Nestoria’s property information.
I had been thinking about this type of application for a long while, but before Google Maps APIs and the technologies of Web 2.0, this was practically impossible. Even though the demonstration proves that it is possible for one developer now to accomplish this task – which was something unimaginable even 3 years ago – it is still fairly challenging. Travel information is not readily available and calculating travel time for lots of places is not a trivial task.
In addition, Chris integrated user-centred design principles and has done a very good job in creating an effective – and really useful – application. I can imagine this application continuing to develop to become, practically, a multi-criteria analysis system for people to find places to live in. Chris is going for the ‘Show Us a Better Way’ competition, and I hope that he’ll be able to continue and develop the application further.