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Berkeley Carbon Footprint Map Shows Cities How to Fight Climate Change - CityLab

map carbon footprint

By focusing on emissions from goods consumed in a city, Berkeley researchers paint a more accurate picture.

The nations of the world committed to slashing carbon emissions at the COP21 summit in Paris last month, and now cities and communities must figure out how to actually do that. In order to pull it off, local leaders will need to pinpoint the geographical sources of greenhouse gases and figure out what activities produce them...

url: https://www.citylab.com/environment/2016/01/berkeley-climate-change-map-cities/423753/

type: article, format: blog


Maps for your apps - Thunderforest

tags: Andy, service, tiles, map
base map example

Bringing you all the best maps available for your applications and websites.

Superb levels of detail for every community on the planet.

Used by hundreds of applications and websites from around the globe, OpenCycleMap is an award-winning global map for cycling.

Recently chosen by OpenStreetMap for their front page, this map shows public transportation in great detail.

url: http://www.thunderforest.com/

type: company, format: page


Here's how to use data from OpenStreetMap for your infographics • Konrad Lischka


Using OSM Boundaries is simple. Type the name of the city or state or district you are looking for in the search slot above the map. Then OSM Boundaries shows you the correct entry from OSM in the directory tree on the left. Here you select the boundaries you want to export. Important: The tree is hierarchical and you must select all the levels you need. If you select a city and need the boundaries of the underlying urban districts too you have to select...

url: http://www.konradlischka.info/en/2015/05/blog-en/heres-how-you-pull-data-from-openstreetmap-for-your-infographics/

type: article, format: blog


J u l i e   D i l l e m u t h children's author - Blog

And maps are indeed powerful: by showing an area larger than what we can see from the ground, they help us find our way, even helping us form mental maps of places we may never have visited. On a world-map scale, they are powerful politically, and as Mark Monmonier told us in his book, How to Lie With Maps, it’s important to think critically about maps and how they represent (or misrepresent) reality.

url: http://www.juliedillemuth.com/blog.html

type: article, format: blog


Why Children Still Need to Read (and Draw) Maps | Expert Tips & Advice . PBS Parents | PBS

Why Children Still Need to Read (and Draw) Maps

While many skills have become obsolete in the digital age, map reading remains an important tool for building children’s spatial reasoning skills and helping them make sense of our world.

Temple University’s Dr. Nora Newcombe describes spatial thinking as “seeing in the mind’s eye.” Spatial skills are what allow us to “picture the locations of objects, their shapes, their relations to each other and the paths they take as they move.”

url: http://www.pbs.org/parents/expert-tips-advice/2016/01/children-still-need-read-draw-maps/?utm_source=facebook&utm_medium=pbsofficial&utm_campaign=parents_expert

type: article, format: none


The L Train closure—what data can tell us — CartoDB Blog

Commuter duration breakdown

The news heard by millions of straphangers around New York City last week was Metropolitan Transit Authority’s (MTA) proposed repair to the blighted Canarsie Tunnel, the vital connection used by the L train to connect Manhattan and Brooklyn under the East River. Due to extensive damage caused by flooding from 2012’s Hurricane Sandy, the restoration will have large consequences for L train riders in the near future. How massive and where those...

url: http://blog.cartodb.com/looking-at-the-l/

type: article, format: blog


sztanko/solsticestreets · GitHub

tags: streets, solstice, map, OSM
@sztanko A small project that shows all streets aligned towards the summer and winter solstice

url: https://github.com/sztanko/solsticestreets

type: project, format: none


Mapbox Studio Cartography


I've been playing around with the newest version of Mapbox Studio for a couple of weeks as part of the private beta. I've attempted to put the tool through its paces, to push the cartographic envelope, and now I want to share my thoughts and experiences with you.

Mapbox Studio is a web-based mapping application that allows you to quickly style a map of the entire world.

url: http://mapboxstudio.mapsmith.net/

type: article, format: blog


The true size of ...

A tool to select a few countries and compare their sizes. The tool places one country on top of the other.

url: http://thetruesize.com/

type: project, format: page


Forget the Shortest Route Across a City; New Algorithm Finds the Most Beautiful

tags: map, routing
short and beautify routes

If you prefer beautiful routes over short ones, GPS mapping algorithms are of little use. But Yahoo researchers have come up with an approach that could change that.

The way we navigate in cities has been revolutionized in the last few years by the advent of GPS mapping programs. Enter your start and end location and these will give you the shortest route from A to B.

url: http://www.technologyreview.com/view/528836/forget-the-shortest-route-across-a-city-new-algorithm-finds-the-most-beautiful/

type: article, format: blog


ITO Map - Cycling

tags: ITO, map, cycling, OSM
map on-road bicycle tagging

Maps that relate to cycling, including cycling in urban areas, for leisure and for competitive purposes.

url: http://www.itoworld.com/map/group/15

type: none, format: none


mapschool: a free introduction to geo

earth shapes

What is a map? Until the 1980s, maps were painstaking documents created by hand. These days maps are almost always made with the help of a computer. Maps today are commonplace, interspersed in driving directions, visualizations, and political boundary disputes. Let’s look deeper and think about the fundamental elements of maps from the eye of the creator.

url: http://www.macwright.org/mapschool/

type: article, format: page


The Racial Dot Map: One Dot Per Person | Weldon Cooper Center for Public Service

Washington Racial Map

This map is an American snapshot; it provides an accessible visualization of geographic distribution, population density, and racial diversity of the American people in every neighborhood in the entire country. The map displays 308,745,538 dots, one for each person residing in the United States at the location they were counted during the 2010 Census. Each dot is color-coded by the individual's race and ethnicity.

url: http://www.coopercenter.org/demographics/Racial-Dot-Map

type: article, format: none


The National Map Corps

tags: nation, map, team, OSM

The USGS National Geospatial Program (NGP) sponsored various forms of volunteer map data collection projects over the past two decades. Citizen cartographers revised many maps during this period, but the program was suspended in 2008.

url: http://nationalmap.gov/TheNationalMapCorps/

type: project, format: page


Childcare Services in Alexandria, VA on Yahoo! Local

tags: child, day care, map
map of childcare in alexandria by Yahoo Yahoo Local page for childcare in Alexandria

url: http://local.yahoo.com/VA/Alexandria/Government+Community/Family+Services/Childcare+Services

type: none, format: none



tags: GIS, map
OpenStreetMap logo OpenStreetMap is a free editable map of the whole world. It is made by people like you. OpenStreetMap allows you to view, edit and use geographical data in a collaborative way from anywhere on Earth.

url: http://www.openstreetmap.org/

type: project, format: page

WMATA fixes their maps

tags: WMATA, Metro, map, color
WMATA finally fixed their Google maps. Every metro line was blue; now they're the appropriate color. WMATA

Groking the Google Map

My current project at work has me drawing maps. So when a colleague sent me an interesting "article" regarding Google Maps, i finally understand exactly what's occurring under the covers. So the questions are (1) how many web pages are loaded and (2) who draws the maps? Read on for the answers.

Only one web page (disregarding iframes) is loaded, or at most O(1) web pages are loaded. Proportionally it has very little HTML and a massive amount of Javascript.

Here's revelation #1. The Javascript reconnects to the web server using the XMLHTTP method (ie. not GET nor POST). This is like a GET, but it can take parameters -- grid identifier and zoom level in Google's case -- and returns XML -- or points in this case.

Exactly what data does it get? Street coordinates? From a plane's eye, yes, from a birds eye, no. Closer to the ground it gets curb coordinates. Keep i mind that this is just numerical data, X and Y coordinates.

Who does the rendering? Your web browser does. Not only can Javascript connect to a server. It can also draw lines and polygons. See DHTML: Draw Line, Ellipse, Oval, Circle, Polyline, Polygon, Triangle with JavaScript.

Two things to note. Panning is fast and smooth because new data (n cells) are requested at the same level. Zooming is not because n2 cells are requested at a new zoom level. Also n, the number of cells along one edge of the map, is related to the size of your browser window.

It's time i resurrect my (personal) map drawing project which uses Java instead of Javascript. Here all navigation is smooth and fast. Also it caches geographic information obviating the need to rerequest it.

I leave you with one question. Why doesn't Google tie zooming to the mouse wheel?


After a long day at work of arduous programming, i come home to do what? Yes more programming. But wait there's a difference. At home, i can sip my beer while waiting for code to compile.

At work today i was able to take the Tiger dataset and draw a map. Tiger comes with only line data, ie. only one dimensional. However for each chain of points there are attributes referring to adjacent polygons. Using tigerpoly.py in the GDAL project i was able to construct the 2 dimensional polygons.

All that data was inserted into a PostgreSQL database with PostGIS installed. PostGIS and GDAL needed a couple patches. Then i wrote a Java program to grab the data using JDBC and drew it using AWT. Sure Java2D is better, but i'm not sure i need it. After all i'm just drawing lines and polygons. Sheesh.

I'm guessing all map data comes from the same source. The Census Bureau. Therefore, even Google (eventually) gets their data from Tiger. How is it different? Well (1) the roads have width proportional to the number of lanes, (2) all the corners are rounded, and (3) their roads are labelled. Those are the major differences in appearance. As for differences in feel, don't get me started.

And on a side note, it's been so long that i almost forgot my password to my own website. Back to dinner (Otter Creek Alpine Ale).