The graphic below shows the population of London across a number of transects overlain on the city’s underlying terrain. It was produced by Ordnance Survey in 1935 and is one of the few early examples I’ve seen of the organisation producing “data visualisations” alongside their famous maps (they do a lot more of this now […]Continue reading »
There has been a resurgence of interest in data visualizations inspired by Joy Division’s Unknown Pleasures album cover. These so-called “Joy Plots” are easier to create thanks to the development of the “ggjoy” R package and also some nice code posted using D3. I produced a global population map (details here) using a similar technique in 2013 and since […]Continue reading »
Thanks to the power of Reddit the “Population Lines” print (buy here) I created back in 2013 has attracted a huge amount of interest in the past week or so (a Europe only version made by Henrik Lindberg made the Reddit front page). There’s been lots of subsequent discussion about it’s inspiration, effectiveness as a form of […]Continue reading »
One of the best datasets for understanding the explosive growth of cities across the world in the last 75 years in the UN World Urbanisation Prospects research, which records individual city populations from 1950 to 2014, and includes predicted populations up to 2030. I have been meaning to create an interactive map of this fascinating data for…Continue reading »
Today, a new version of the Greater London Authority (G […]Continue reading »
One of my earliest projects at UCL, back in 2009, was t […]Continue reading »
***25% Off Sale***Ends 20th August*** I recently produc […]Continue reading »
Mobile phone data represent one of the “Big Data& […]Continue reading »
A slideshow of maps showing the population change in England and Wales between 2001 and 2011 divided by gender and the age ranges 0 to 14, 15 to 29, 30 to 44, 45 to 64 and 65 and over.Continue reading »
Below are maps showing how the population change in London between 2001 and 2011 differs depending on the age range and gender. Swipe across each image to see how the male and female population change differs across London’s Boroughs. Here…Continue reading »
I recently had the pleasure of presenting at the first Data Visualisation London Meetup event where I spoke about some of work we do at UCL CASA. A fair chunk of the slides were movies so I thought it best to stick them in a blog post. If you like what you see you can …Continue reading »
Creating a new Output Area Classification.
Chris Gale, UCL Department of Geography.
To download a PDF of the seminar please click here.
To download a PowerPoint Slide Show of the seminar please click here.
The current Output Area Classif…
In a previous post I talked about the Index of Multiple Deprivation (IMD) in London, and how a “standard” representation only reflects the geographical reality of the land. By utilising a cartogram tool this potential issue can be overcome by rescaling each areal unit by its resident population, for the IMD I used mid-year population estimates available from the Office for National Statistics at Lower Layer Super Output Area (LSOA) level. To add a layer of context to the previous maps, I have constructed cartograms for London to illustrate the change in population between 2001 and 2009. I have used 2001 census data along with 2009 mid-year population estimates to calculate the percentage change for each of the 24,140 output areas (that contain on average 250 individuals nationally) that make up Greater London for the age ranges: 0-4, 5-14, 15-24, 25-44, 45-64 and 65 and over. To create the cartogram aspect of the maps I have used the total population of that particular age range in 2009 to rescale each areal unit. I have also produced the same population change maps using the “standard” representation of London to allow comparison with the cartograms. The results of this can be seen […]Continue reading »
Using the excellent SANET extension for ArcGIS 9.3 I was able to take some of my data for Southwark that I had geocoded to address level, and estimate the population density using the OS Mastermap ITN product. The procedure is essentially a Kernel Density Estimation that takes place on a given network rather than across 2D space, this effectively controls […]Continue reading »
Buried in the London Datastore are the population estimates for each of the London Boroughs between 2001 – 2030. They predict a declining population for most boroughs with the exception of a few to the east. I was surprised by this general decline and also the numbers involved- I expected larger changes from one year to …Continue reading »
The IGU Commission on Population Geography plans once again to sponsor and actively promote some themed sessions at the bi-annual international population conference to be held in Umeå, Sweden in 2011. The Commission proposes three themed sessions linked to the commission’s core interests in ‘Population and Difference’ and ‘Population and Vulnerability’. A. Population and Difference […]Continue reading »
Population Footprints 25-26 May 2011, The Mermaid Conference Centre, London EC4V 3DB 1st Announcement & Call for Poster Abstracts www.populationfootprints.org We would like to bring to your attention this major UCL and Leverhulme Trust symposium on human population growth and global carrying capacity to be held in London on Wednesday 25 & Thursday 26 May 2011. The symposium will […]Continue reading »
The Population Geography Research Group (PGRG) of the Royal Geographical Society (with Institute of British Geographers), has launched a new website – designed and hosted by UCL, at www.popgeog.org The site features the main activities of PGRG (including conferences and workshops), … Continue reading →Continue reading »