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London Cycle Hire and Pollution
As a cyclist in London you can do your best to avoid left turning buses and dozy pedestrians. One thing you can’t really avoid though is pollution (although I accept cyclists probably aren’t much worse off than pedestrians and drivers in this respect). To illustrate this I have taken data for 3.2 million journeys from ...
The Power of Comparison: Just How Big Is It?
If I said a country was 1594719800 metres squared it would mean a lot less to you than if I said it was about the size of Greater London (so long as you know about how big Greater London is). For this reason the media tend to report the extent of a flood in ...
Mapped: Christmas Around the World
It would be a shame to end the year without a festive map! Jack Harrison (@jacksfeed) is studying for a research masters in “Advanced Spatial Analysis and Visualisation” at UCL. I teach on the course and it obviously hasn’t worked Jack hard enough this term as he has had time to slack off and produce ...
The Best of 2011
As 2011 draws to a close it is worth reflecting on what, I think, has been a defining year for mapping and spatial analysis. Geographic data have become open, big, and widely available, leading to the production of new and interesting maps on an almost daily basis. The increasing utilisation of technology such as Google Fusion Tables has ...
Just how far can the Tube take you?
Transport for London have just released their performance data (link here) for the London Underground network. It is in the form of a really detailed file that contains, amongst other things, the “Peak Operated Kilometres” and “Peak Passenger Journeys” for the past 6 years or so. If you total the distances covered by the Tube ...
Mapping Academic Tweets
Another day, another Twitter map- this time showing the global distribution of tweets that link to academic journal articles. I am always a bit skeptical of Twitter data (especially with location information) but as an academic seeking to publish in many of the journals that feature in people’s tweets I was prepared to make an ...
Naming Rivers and Places
A map doing the rounds at the moment (thanks to a plug from flowingdata) is Derek Watkin's brilliant map of "generic" terms for rivers in the United States (above).The map shows how different cultural and linguistic factors have influenced the naming of geographic features in the US. For example French settlers named the streams they encountered "bayous".
Mapping GCSE Scores
In the UK, August is exam results month for 16-18 year olds. Every year, photos of leaping teenagers clutching their results are accompanied by reports of record attainment rates, debates around how challenging modern exams are and, more so recently than ever, concerns for the number of sixth form and university places. Back in March ...
Flattening the Earth
Flattening the Earth so that it can be easily drawn on a 2-dimensional surface is complicated. Over many years map projections have been developed to aid in this process, but they can only really estimate (albeit very accurately) the shape and dimensions of things on the Earth’s round surface. Whilst it is important to understand ...
World Transport Links and US Climate from The National Geographic over a Century ago
Following my previous post I have been digging around archive.org for interesting spatial/ geographical related resources. A search for “geographic” yielded a number of back issues of the National Geographic Magazine. They date back as far as 1888 and contain some great images and maps. There are some real gems to be had, such as ...
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From CASA
- Windows Phone 7 – App in 30 days
- Twitter data – visualised by our MRes students
- Martin Dodge, ex-CASA, wins AAG Meridian Prize for his Book Code/Space
- Satellite Meeting at ECCS 2012: Complexity in Spatial Dynamics
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- London Cycle Hire and Pollution
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