Writing at The Conversation, geographers Derek Alderman and Joshua Inwood explore African American examples of “counter-mapping,” from maps made by the Black Panthers proposing new police districts to modern interactive maps of lynchings and police violence. “Black Americans were among the earliest purveyors of counter-mapping, deploying this alternative cartography to serve a variety of needs a century ago.” [Osher]
Charles Booth’s London Poverty Maps (Thames & Hudson, October) is a look back at Booth’s idiosyncratic and judgey block-by-block survey of poverty and the social classes of late 19th-century London (his maps described the “lowest class” as “vicious, semi-criminal,” for example). The final maps, hand-coloured, are famous in map terms: there was an exhibition back in 2011. The book adds preparatory maps, “selected reproductions of pages from the original notebooks, containing anecdotes related by Londoners of every trade, class, creed and nationality together with observations by Booth’s interviewers that reveal much about their social class and moral views.” Plus essays and infographics to put the whole thing in a modern context. Mapping London has a review.
The HTC 2020 map is an interactive map of hard-to-count communities built for campaigns to increase participation in the United States’s 2020 census. Hard-to-count communities are populations that historically have a poor self-response rate: they return their census forms online or by mail at lower rates, requiring followup interviews by enumerators. The map shows response rates by census tract, and notes the demographics of each tract in terms of why the response rates might be low: lack of Internet access, or large numbers of people who are historically undercounted (poor, rural, people of colour). [NYPL]
CBC News: “A group of researchers at the University of Ottawa is using Google Street View to spot instances of gentrification in the city’s neighbourhoods. […] The program looks for patterns of improvements on individual properties, such as new fences, landscaping, siding or significant renovations.” Honestly not something for which I expected Street View to have a use.
Laura Vaughan’s Mapping Society: The Spatial Dimensions of Social Cartography (UCL Press, 3 September) “traces the evolution of social cartography over the past two centuries. In this richly illustrated book, Laura Vaughan examines maps of ethnic or religious difference, poverty, and health inequalities, demonstrating how they not only serve as historical records of social enquiry, but also constitute inscriptions of social patterns that have been etched deeply on the surface of cities.” Available in the U.K. in hardcover (£45) or paperback (£25), but you can also download the PDF for free: the book is published under a Creative Commons licence.
Diagrams of Power, a group exhibition taking place right now at OCAD University’s Onsite Gallery in Toronto, “showcases art and design works using data, diagrams, maps and visualizations as ways of challenging dominant narratives and supporting the resilience of marginalized communities.” Curated by Patricio Dávila, it runs until 29 September. Free admission.
Puerto Ricans, as U.S. citizens, are able to travel freely between Puerto Rico and the U.S. mainland. In the wake of Hurricane Maria, many of them sought refuge in Florida, New York and other parts of the U.S. Using anonymized cell phone location data for some 500,000 smart phones, data analysis firm Teralytics was able to map where Puerto Ricans moved from August 2017 to February 2018. CityLab has the maps and the story: “Between these months, nearly 6 percent of the Puerto Rican population left the island and is still living in the continental U.S. Another 6 percent left between October and September 2017 but returned to the island by February 2018.”
NASA’s Socioeconomic Data and Applications Center (SEDAC) has produced a population estimation service “for estimating population totals and related statistics within a user-defined region.” Basically, it provides a population estimate for an area drawn on a map. Available as data via map and GIS clients, it’s also accessible via a web app. I’ve noodled about with it; its population estimates are generally not insane. [Kottke]
One of the proposals in the new draft London Plan is to prohibit new fast food establishments within 400 metres of an existing school as a means of combatting childhood obesity.1 This is going over about as well as you’d think. Dan Cookson has mapped the locations of London’s fast food establishments and the 400-metre exclusion zones around each school; his map suggests a problem: there would be few places in the city able to host a new fast food joint.
It’s in French, and the accompanying text is weighted toward Quebec examples, but Le Devoir’s interactive map showing neighbourhood-by-neighbourhood median income levels, based on recent census data, and how they relate to the national average is worth looking at even so. [Nathaniel Kelso]