Tuesday, March 03, 2015

Mapping New York's Open Data


NYC Open Data records all 311 service requests in New York City from 2010 to the present. The 311 number provides access to non-emergency municipal services and is commonly used to report issues such as loud noise, illegal parking and disruptions to public services / utilities etc.

The 311 Requests Map shows 311 requests made in the last 7 days. The maps uses the SODA API to retrieve the last seven days of 311 requests and displays them on a Leaflet map using Stamen's Watercolor map tiles. The data shown on the map can be filtered by agency and type of complaint.


The NYC Rat Map is another Leaflet.js powered map, this one shows the latest reports of rat sightings in New York City. The map shows the locations of all rat sightings in the city since 5/29/2014. If you select a marker on the map you can view details about the date of the sighting, the environment of the sighting and the exact address.

The NYC Rat Map uses Dave Leaver's Marker Clusterering plug-in for Leaflet. The map also includes a heat-map view of rat sightings in the city.


New York has set a 'Vision Zero' goal, to end traffic accident deaths and injuries on the city's roads. To help achieve this aim the City of New York has released a map, Vision Zero View, which shows detailed information on traffic injury and fatality crashes within New York.

The map has two main views; a visualization of New York's traffic accidents and a visualization of the city's attempts to make the streets safer. The 'Crashes' view allows users to visualize the locations of pedestrian,cycling and car injuries and fatalities. This map view includes a timeline which allows you to filter the results shown on the map by year.


The Public Advocate for the City of New York has released an interactive map, The NYC Landord Watchlist, which maps the city's most poorly managed buildings.

The map uses data from the Department of Housing Preservation and Development to list over 6,800 buildings across New York. You can search the map by address and by borough. If you select a property listed on the map you can view the number and type of violations it has received.

The map itself was created using Mapbox but also includes small static Google Street View images of each building listed.


Every Demolition in Manhattan is an animated Google Map showing every demolition that has taken place in Manhattan in the past eleven years. The data for the map comes from the NYC Department of Buildings.

When you load the map animated markers appear on the map to show the location of the demolitions. A time-line beneath the map shows the progress of the animation and indicates the year currently displayed on the map.

Every Demolition in Manhattan uses the Google Maps API circle object for the demolition markers. The circle object in the API allows you to define the opacity of the circle's fill color. Every Demolition in Manhattan uses the custom opacity settings to good effect, to fade in and out each demolition marker during the playback of the animation.


The New York Police Department's NYC Crime Map provides crime information down to the nearest intersection.

The map allows users to view crime data for any month since January 2014 and to filter the results by type of crime. If you zoom in on the map you can view the data by individual incidents of crime or as a heat map. If you search for a location it is also possible to compare the local crime data with crime in the city as a whole.


The NYC BigMaps uses the Your Mapper map creation tool to map restaurant inspections and 311 service calls in New York City. The restaurant inspections map displays New York City Department of Health inspections across 5 boroughs since Jan 2008.

You can search the map by category, date range, keyword, and location. The map then displays restaurants on the map at the location you searched. Green map markers indicate restaurants with no health violations.


The New York World has mapped the New York State Department of Agriculture and Markets supermarket inspections from January 2008 to July 2013.

Inspectors visit every grocery store at least once a year. The New York World has mapped all the supermarkets that had 'critical deficiencies' flagged in the inspections. Users can search the map by neighborhood, zipcode or address to find the local supermarkets near them that have been shown to have issues deemed as "an immediate threat to the public health and welfare."

Mapping London's Workers Enclaves


Oliver O'Brien's London Tube Data Map map is a fascinating analysis of London data. The map visualizes a wealth of data about the London Underground and the communities living around each tube station.

Recently the map has been updated to include the most popular job at electoral ward level in London. The map reveals that the most popular job in the Hackney and Islington area is art & media. My guess is that the definition of 'art & media' includes new media and this is the result of the technology companies centered around Old Street and the 'silicon roundabout'.

In the areas around the Temple and the Inns of Court we find a small enclave of people working in law. Mayfair, Kensington and Belgravia are dominated by people working in business. Their secretaries however seem to mostly live in the less salubrious areas around Bexleyheath. Zones 2 and 3 of the London tube map seem to be largely dominated by people working in sales.

Monday, March 02, 2015

All the Mormons Live in Utah


It's probably no surprise that the Church of the Latter-day Saints is the top religion in all of Utah's counties. Did you know however that most of the south-east in made up of evangelical protestants.

Mapping Religious Adherence in the US shows the most worshiped religion in each U.S. state and the percentage of the population actively practicing the religion.

The map makes great use of a bivariate choropleth view to show the top religious group in each U.S. county, with the intensity of each color showing the religious adherence for that county (the proportion of the population actively practicing the religion). You can click on any county on the map to view the most popular religion and the percentage of active worshipers.

Mapping the Gangs of New York


Martin Scorsese's film the Gangs of New York tells the tale of the gang wars between rival groups in the Five Points district of Lower Manhattan in the mid-Nineteenth Century. The film was based on the true gang wars which took place in the area. One of the most notorious battles between the gangs was the Dead Rabbits Riot, a two-day battle which took place on July 4–5, 1857.

The Gangs of New York story map recounts this street fight between members of the Dead Rabbits gang and the Bowery Boys using an historical map and images from the New York Public Library Digital Collections.

I created the map using Leaflet.js and waypoints.js. Using waypoint.js with Leaflet allows you to trigger map interactions by browser scrolling. The result is that you simply need to scroll down the Gangs of New York map to progress through this retelling of the Dead Rabbits Riot.

I've also added a few other images dating from 1856-1858 to the map and a YouTube video clip from Scorsese's film. Just click on the video to play and pause the film clip. When you have finished scrolling through the history of the Dead Rabbits Riot you can zoom out on the map to view the image markers dotted around Lower Manhattan on the map.

I haven't tested the map on a mobile or tablet device but I think waypoints.js doesn't play too well with these devices. Therefore the Gangs of New York map is probably best viewed on a desktop or laptop computer.

The Madrid Street View Game


On March 5th Dainese D-Store is opening a new shop in Madrid. Before the store opens you can earn yourself some neat prizes by finding some hidden objects hidden on the map of Madrid.

To win the prizes you need to explore the streets of Madrid in Google Maps Street View. In La Invasion Roja a number of prize coupons have been placed around the city. All you need to do is find them by exploring Street View on your trusted moped.

Once you connect to the game with a Facebook account your task is to explore the city of Madrid on your moped using Google Maps Street View. The area which you need to explore is outlined on an inset Google Map. As you ride the city streets you need to look out for the red arrow markers which indicate the presence of the hidden prizes.

If you manage to find a hidden prize coupon you need to get yourself down to the new Dainese D-Store on March 5th in order to redeem your prize.

Old London - A Day in the Life


Mapping Emotions in Victorian London is a joint project by Stanford Literary Lab and Historypin which aims to map the emotional values attached to London locations in Victorian fiction.

The project is creating three London maps; 'Dreadful London' dedicated to mapping locations associated with fear in Victorian literature, 'London in the Light' which will map locations which have happy connotations and 'A Day in the Life' a map of locations in Victorian literature with neutral emotions.

At the moment A Day in the Life is the only map which has been completed. A Day in the Life of Old London is dedicated to mapping London locations which have neither strong emotions of happiness or fear attached to them. The project uses an historical map of London (from the National Library of Scotland) to show the neutral locations mentioned in Victorian Literature.

You can browse through the mapped locations either by clicking on the the map markers or by selecting from the text extracts in the map sidebar. When you select a location or text extract you can view the discussed location on the Victorian map and read the complete extracts describing or referring to the location in the Victorian literature.

Sunday, March 01, 2015

The Maps of the Week


Can you run faster than a tiger? This new WWF Tiger Challenge map lets you compare your running data with that of a real tiger.

The Worldwide Wildlife Fund are tracking the daily movements of a tiger in Russia. His daily track is visualized on a Google Map and shows the total distance traveled and his average speed over the course of the day.

To find out if you could beat the tiger in a running race you can connect your own data from a number of sports tracking apps (including Runkeeper, Nike+, Strava & Map My Run). Once you've added your data you will then discover whether you are as fast as a tiger or not. My advice is to cheat and at least use a bike when racing a tiger.


A few weeks ago CartoDB released CartoDB Heat Maps. This new heat maps option in CartoDB leverages the power of the Torque library, which allows developers to efficiently render and publish very large datasets to the client.

CartoDB Heat Maps can also be used with Torque to create animated heat maps. Where this could be particular useful is in visualizing weather data and patterns. For example, check-out this map of historical Hurricane and Tropical Cyclone Track Density. The map animates the track density of hurricanes and tropical cyclones from 2000-2013, using data from the National Climatic Data Center - NOAA.


Not to be outdone Mapbox has been playing with the latest update of Turf.js to create animated heat maps of historical U.S. hail data. Turf now includes powerful new functions to aggregate dense point data into grids and heat maps. Mapbox has created a demonstration of this new heat map ability in a blog post, Animated Heatmaps and Grids with Turf.

The map not only shows an animated heat map of historical hail data but also allows you to view the data as animated hexbins, triangles, squares and points. The map also includes the option to view the animated data in three different speeds.


Recently I've spent a lot of time creating vintage map browsers with the Leaflet mapping library. I used the New York Public Library's map collection to put together a map of New York Vintage Maps. I then used the amazing David Rumsey Map Collection to create a map of San Francisco Vintage Maps.

Well it turns out that Vestiges of New York has created a better collection of New York vintage maps, also using vintage maps from both the NYPL and the David Rumsey collection of historical maps. Their NYC Time Machine is very similar to my map, except it has far more vintage maps of New York maps for you to browse through.

The NYC Time Machine includes 27 vintage maps of New York, ranging in date from 1660 to 1924. The map includes a neat option to quickly switch between your chosen vintage map and a modern map, allowing you to compare the vintage map to the modern streets of New York.

Mapping India's Water Supply & Demand


It is predicted that India will only be able to meet 50% of its water demand by 2030. A new map, from the World Business Council for Sustainable Development and other organizations, has been released to help water users in India respond to these challenges by measuring and mapping water risks in the country.

The India Water Tool uses 14 datasets and risk indicators to map India's water supply and water-related risks. The map provides an overview of annual rainfall across India and an insight into groundwater levels and surface water quality. The map also allows you to view projected water demand for 2025.

Saturday, February 28, 2015

Berlin in Incredible 3d


Wirtschaftsatlas Berlin is a map of Berlin which includes a pretty amazing isometric view of the city with fully textured 3d building models. The map also includes a more traditional OpenStreetMap 2d map view and Google Maps Street View.

To create the 3d map around 500,000 Berlin buildings were photographed from the air and their roofs were measured by Lidar. From this data photo-realistic 3d models of the buildings were created for the map.

Mapping Wheelchair Accessibility


Accessible.net is a French Google Map of wheelchair accessible venues. The site provides an easily searchable map of categorized accessible venues, including restaurants, hotels, museums etc.

You can filter the results shown on the map by category. When you select a venue's marker on the map you can click through to view all the venue's accessibility information and other disability/accessibility facilities provided by the venue.

The map results automatically update as you pan and zoom the map. The map also support browser navigation, so you can use your browser's back button to return to previous searches and map interactions.

Accessible.net is provided as open data. Not only is the map free to use but the venue accessibility data can be used in your own applications.


Wheelmap is another interactive map dedicated to showing the locations of wheelchair-accessible public venues. Wheelmap uses three colors of markers to indicate the accessibility of venues, a green marker means the venue is accessible, orange means it is partially accessible and red means that the venue is not accessible to wheelchair users.

Wheelmap is a crowd-sourced project which means that anybody can add information to the map. Logged in users can also upload photos of venues listed on the map and add comments about the wheelchair accessibility of the venue.