Map: Respiratory Risk in Detroit

DETROITography

respiratory-hazard-midb-ems_v2

Air quality is extremely difficult to capture due to changing wind direction (generally moving from SW to NE), temperature change, size of the Detroit-Windsor airshed, and various other factors. Measuring air quality at a neighborhood level is next to impossible without an extensive network of instruments to collect data in a small area.

A handful of data sources can be helpful in examining the issue, but still lack the necessary specificity. This is highlighted in Southwest Detroit where persistent asthma, emergency calls, and respiratory risk are all categorized as low even while there is such a high density of pollution emitting facilities.

Many anecdotal accounts of teachers keeping a drawer full of inhalers and inhalers being sold for cash on the street all indicate that respiratory risk is higher in Southwest Detroit than the data show, but people are likely not utilizing emergency and other health services.

View original post

Map: Home Range of the Detroit Pheasant

DETROITography

pheasant_range_map.png

For the last few years I’ve been thinking about Detroit’s most interesting bird around Thanksgiving time. Living near Brush St. and I-94, my dog and I would regularly see a male pheasant patrolling the vacant lots next to the expressway. This year I started working on the Eastside and on an almost weekly basis came across a pheasant flying in front of my car along Ferry St. before Mt. Elliott.

I started scrapping any and all online media that mentioned pheasant sightings in Detroit and included the data from WDET’s crowdsourcing (read more on the history of Detroit pheasants here too). For the analysis I had 109 sightings of roughly 300 pheasants in Detroit between 2002 and 2016. Some sightings were likely the same pheasant seen over and over again while others were just a lone bird out looking for food beyond its normal range.

Using inverse distance weighting…

View original post 88 more words

Map: Detroit Murals in the Market vs. Graffiti Tickets

DETROITography

murals-graffiti-map.png

The city has ramped up ticketing for blight violators and that includes properties with graffiti. In some reported cases the graffiti tickets included sanctioned murals and street art, for example Eastern Market, Brooklyn Street Local (restaurant), and the Grand River Creative Corridor. Those tickets led the Mayor to apologize and dismiss all graffiti tickets for murals and signs.

As the artwork for Murals in the Market 2016 has started coming together. I started wondering how many of these graffiti offenses involved buildings in Eastern Market, where there is already a high number of sanctioned murals.

In some cases there have been buildings with both a new mural wall location and a graffiti ticket, but the majority of those have been dismissed graffiti tickets for sanctioned murals. There were 28 graffiti tickets in Eastern Market between 2015 – 2016 and 14 have been dismissed. The majority of businesses ticketed for…

View original post 23 more words

Map: Geography of Baseball Diamonds in the Detroit Region

DETROITography

terrapattern-baseball-detroit-regionTerrapattern recently launched to investigate typologies of similar places across cities via satellite imagery.

“…the Terrapattern prototype is intended to demonstrate a workflow by which users—such as journalists, citizen scientists, humanitarian agencies, social justice activists, archaeologists, urban planners, and other researchers—can easily search for visually consistent “patterns of interest”. We are particularly keen to help people identify, characterize and track indicators which have not been detected or measured previously, and which have sociological, humanitarian, scientific, or cultural significance.”

I decided to click on the baseball diamond at Tigers Stadium to see what places were similar in “Detroit” – Terrapattern’s sample area for Detroit includes a broader area beyond the city limits, but also cuts off the Far Westside.

terrapatttern-baseballThe result is this great geographic plot of similar images and a series of snapshots of other baseball diamonds. Terrapattern even gives you a nice GeoJSON file to play with if you…

View original post 68 more words

Map: Property Praxis – Speculation in Detroit

DETROITography

pp-map-large

Land in Detroit has been widely covered in the media as the city and it’s residents have grappled with widespread subprime mortgage lending, myriad tax foreclosures, and targeted blight removal.

The primary connection between these major crises and efforts in Detroit is property speculation.

At least 20% of land in Detroit is owned by property speculators, defined by the amount of property they own that is not registered to an owner that lives in the same neighborhood. Property speculators benefited from the new inventory of property created by the mortgage crisis, but in turn fueled the decline into blight of once intact neighborhoods.

This collaborative mapping project is not the first to examine individuals and corporations that have held large swaths of land in Detroit, but it is the first to examine the true extent of property speculation by digging into the records of shell companies and LLC that…

View original post 41 more words

Map: Park Acres Per Resident in Detroit

DETROITography

ParkAcresPer1000.png

A while back I saw this analysis completed by the WNYC Data News team on park access and wanted to recreate it for Detroit.

There has been a lot of change with parks over the years from the near closing of 50+ parks during Mayor Bing’s time, to an influx of funding to keep them open, then the widespread adoption of parks by community groups, now the new parks master plan, and $11.7 million being dedicated to 40 smaller neighborhood parks this summer.

The map was created by giving every census tract a half-mile buffer and then calculating how many acres of park space fell within those extended boundaries for each census tract. Those acres were then matched to the number of residents living within each census tract.

Some of Detroit’s more populated areas have much smaller parks. With more people and smaller park spaces that leaves fewer acres…

View original post 37 more words

Map: Detroit Neighborhood Coffee Shop Density 2015

DETROITography

DetroitCoffeeDensity

Some research has said that the existence of coffee shops is a marker of gentrification (Papachristos et al., 2011). A Zillow study found a correlation between Starbucks locations and rising rent and home values. The problem is that Starbucks stores often locate in wealthier neighborhoods, so it becomes difficult to say what is the true relational direction. However, in 2008 Starbucks closed some 600 locations in relatively poorer areas. If anything the jury is still out on coffee shops being a driver or simply an indicator of broader social policies that contribute to gentrification.

Specifically in Detroit, where do home values have to go but up? Demolished seems to be the only other option. In October 2015, Dynamo Metrics release a report funded by the Skillman Foundation and Rock Ventures that attempted to model spatial-temporal impacts on home values from demolitions. The study followed commonly held knowledge that…

View original post 24 more words

Map: Children’s Traffic Fatalities in Detroit 2004 – 2014

DETROITography

child-traffic-fatalities-1

In rethinking the Detroit Geographic Expedition and Institute’s (DGEI) maps on “where black children get run over” and “citywide patterns of child traffic deaths and injuries” it became apparent to me that the pattern was partially due to the distribution of children in Detroit (map). For example Southwest has a higher density of children and also more traffic fatalities of children. However, there are some anomalies, such as the higher numbers on North-South streets in the Lower Eastside, on John R. North of Highland Park, and on Conner near the City Airport.

Detroit is known its high infant mortality rate, high rates of gun violence, and poor education system that all contribute to a harsh environment for children. How do we better protect the children in our neighborhoods from cars?

View original post

Map: Detroit’s Digital Divide

DETROITography

detroitbroadband-improve

I’ve often shared information here that notes 40% of Detroit households have no access to internet, both broadband and cell phone access. In a city that faces countless issues with connectivity and communicating with pockets of people spread across a large area, there is great potential for internet to bring Detroit together, improve communications, and equalize access – jobs, education, resources, etc.

The latest numbers from the 2014 American Community Survey show Detroit has 95,825 households or 37% of all Detroit households have no internet access. The city sadly ranks #2 nationally for cities with over 50,000 households. The logical next step in saying that 37% of Detroit households have no internet is to then ask where are those households located? Who is impacted?

From the above map you can see the obvious outline of Detroit with low broadband internet access. Downtown, Boston-Edison, Grandmont-Rosedale, Palmer Woods, and a handful…

View original post 343 more words