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Global Affairs & Human Geography Digital Knowledge Source
Why What is Where: The Digital Knowledge Source for Geography & Global Affairs
Curated by Allison Anthony
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What would John Snow's famous cholera map look like on a modern map of London, using modern mapping tools?
This brings an updated look using modern geographic technology to this classic map of Snow's study of cholera outbreaks in 19th century London. There is also a link to the actual data and a debate of the early techniques used.
Income maps of every neighborhood in the U.S. See wealth and poverty in places like New York, Los Angeles, Chicago, Philadelphia, San Francisco, Miami, and more.
Compare the neighborhoods in and around your area. What trends do you see? Any surprises?
The Brazilian government's geographic department (Instituto Brasileiro de Geografia e Estatística-roughly equivalent to the U.S. Census Bureau) has compiled an fantastic interactive world factbook (available in English and Spanish as well as Portuguese). The ease of navigation allows the user to conduct a specific search of simply explore demographic, economic, environmental and development data on any country in the world.
Tags: population, worldwide, statistics, mapping, zbestofzbest.
The green dots on this map representing Starbucks locations which are obviously clustered in major metropolitan centers. Cross-referencing this Starbucks address location with population data, Davenport explains his mapping technique: "By counting the number of people who live within a given distance to each Starbucks, we can measure how well centered Frappuccinos are to the US citizenry. In other words: draw a 1-mile circle around every store, then add up the % of the population living within the circles. Repeat for 2, 3, 4....100 miles." The result of this data is a fabulous logrithmic S-curve which explains much about the American population distribution.
Tags: statistics, density, consumption, mapping, visualization, urban.
Find the latitude and longitude of a point using Google Maps.
Simple, straightforward and easy to use. All you do is point and click on the map to get latitude and longitude in both decimal degrees and DMS (degrees, minutes and seconds). You can also quickly enter coordinates in either format an have the location displayed on the map.
Tags: GPS, mapping, location.
Relying on GPS devices can erode our ability to develop mental maps.
While GPS technology can help us in a pinch, relying primarily on a system that does not engage our navigation skills will weaken our ability to perform these functions. While this intuitively makes sense, that the 'mental muscles' would atrophy when not used, it is a reminder that an overuse of geospatial technologies can be intellectually counterproductive.
A distinction should be made between outdoor GPS usage (where the user receives data and makes navigational decisions) and vehicular GPS usage (where the computer typically will make all the decisions for you). As long as you are a part of the decision-making process, you will be strengthening your navigationals skills. In London cab drivers, they've discovered that their brains expand as they aquire 'the knowledge' of the city: http://www.bbc.co.uk/news/health-16086233 ;
This is a brief introduction to what geographic information systems are. This is not a tutorial on how to use it, but a conceptual overview on the potential uses and applications for GIS.
Tags: GIS, video, Unit 1 GeoPrinciples, geospatial, mapping and location.