Interview for the Global Lab Podcast

This week I feature on the 4th Episode of the Global Lab podcast. The podcast is a great new initiative led by Martin and Steve from CASA where they talk about cities, global connectivity and the impact of technology on people’s lives. Episode four features some horrendous physics jokes, Einstein’s Garden at the Green Man festival …

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Weighted Mean Direction Surfaces in Python

I work a lot with flows and spatial interactions, one thing that I’ve wanted to do for a while is compute a mean flow direction surface. Unfortunately, arithmetic means don’t work for angular data, this is because it cannot account for the circular nature of the distribution of angular measurements. For instance the angles 5 […]

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QMRG Best Undergraduate Dissertation Prize 2011

We are pleased to announce that Tadas Nikonovas from the Department of Geography at Swansea University is the winner of this year’s QMRG Undergraduate Dissertation Prize. Tadas’ dissertation entitled “Artificial light emissions in Europe. Trends from a DMSP satellite fifteen year record” was applauded for its interesting and relevant topic, its use of complex quantitative […]

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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”.

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Improved Tree Maps with R

“Treemaps display hierarchical (tree-structured) data as a set of nested rectangles. Each branch of the tree is given a rectangle, which is then tiled with smaller rectangles representing sub-branches. A leaf node’s rectangle has an area proportional to a specified dimension on the data. Often the leaf nodes are colored to show a separate dimension of …

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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 …

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England Riots: Offences Committed and Offenders Age

The Guardian have been keeping track of the magistrate cases and convictions resulting from the recent rioting in England. Using this data I have produced the “tree map” below. For each magistrate I have grouped each offence committed and represented it as a square. The size of the square represents the number of people who …

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Alternate Crime Visualisations

When the Police.UK website was launched at the beginning of 2011 a reasonable amount of criticism was levied at the choice of representation used for the online mapping of the crime data. I wrote about this briefly over at Floating Sheep, and indeed spoke about it one very early morning on BBC Radio – thus […]

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Lecturer in Geographic Information Systems and Remote Sensing, University of Leeds – School of Geography

Lecturer in Geographic Information Systems and Remote Sensing University of Leeds – School of Geography   Reference Number ENVGE0017 Faculty / Service Environment Staff Category Academic Grade University Grade 8 Contract Type Ongoing Full Time / Part Time Full Time Location Leeds – Main Campus   Job Summary   This post is available from 31 […]

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Making Maps From Wikipedia

I’ve been looking at web-based sources of geographic data and Wikipedia links are something I’ve wanted to try out for a while. I found the following page containing Worldwide fossil sites: List of fossil sites This gives a list of sites, but with no locations: The “Site” column contains href links which can be followed to pages […]

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