Category: Maps

Update on GIS information for Haiti

January 20, 2010 / / 0 Comments

We all woke up this morning to see news that another earthquake has happened in Haiti, near the center of the first one eight days ago.

“The United Nations Development Programme (UNDP) employed nearly 400 Haitians in cash-for-work activities to jump start the local economy and facilitate the delivery of urgently needed humanitarian assistance.”

This post is an update to my previous article about how GIS is used for disaster relief efforts. I recently came across a webpage on Harvard’s China Earthquake Geospatial Research Portal that lists copious, up-to-date, GIS-compatible data from organizations around the world. The portal began in response to the Sichuan, China, earthquake in May 2008.

Visit the Haiti GIS Data Portal now.

For new GIS students, this would be a great starting point for a class final project. The Portal is hosting the datasets as a public service and invites anyone with relevant data to submit it to the site operators for wider dissemination. Data comes from the United Nations, several universities, OpenStreetMap contributors, and the German Center for Air and Space Travel, among others.

“Petty Officer 3rd Class Cameron Croteau, a Damage Controlman aboard the Coast Guard Cutter Oak, carries an injured Haitian girl to an awaiting Coast Guard HH-60 Jayhawk helicopter Tuesday, Jan. 19, 2010. Coast Guard and Navy helicopters airlifted injured Haitians to a private hospital in Milot, Haiti. U.S. Coast Guard photo by Petty Officer 3rd Class Brandyn Hill.”

As I mentioned in the previous post, there are many photos on Flickr when you search for “haiti earthquake.” When I wrote the post on January 14, 2010, there were only about 300 photos, and now there are over 6,900. Only 1,200 have a Creative Commons license, though (both of the photos above have a Creative Commons license). It seems that the United States Military, the United Nations, and major relief organizations are providing the majority of photos. And they’re uploading them fast. The number of photos on Flickr jumped by 50 from when I started this paragraph.

How GIS helps earthquake relief efforts for Haiti

January 14, 2010 / / 0 Comments

While Geographic Information systems software can definitely produce pretty maps, its power lies in analyzing data and plotting or comparing sensory or observed data to spatial data (like roads or terrain). The earthquake in Haiti rocked the capital city, Port-au-Prince with a shock of magnitude 7.0 on Tuesday, January 12, 2010.

A photo from a United States military flyover shows damage in the Port of Port-au-Prince, Haiti. Photo taken by Petty Officer 2nd Class Sondra-Kay Kneen and uploaded by Chuck Simmins.

There are several applications for GIS to help with earthquake response, and two blog posts that appeared this morning shed light on how.

The first article came from ESRI, the California-based makers of ArcGIS, the most used GIS application. The article linked to a user-built map on their ArcGIS Online service showing on Bing maps where the earthquake and its aftershocks struck (the map sits behind a registration wall). ESRI even has a disaster response team that helps organizations get their response projects off the ground quickly.

Infrastructurist posted the second article, showing some before and after satellite imagery of Haiti, provided by Google and GeoEye.

So what can GIS do? From ESRI’s list, “GIS for Disaster Response“:

  • Rapid identification of potential shelter/housing locations (schools, libraries, churches, public buildings) appropriate for supporting affected populations.
  • Determine how many tents will be needed based on the location of populations affected by the disaster.
  • Analyze areas where large numbers of refugees can establish camps out of harm’s way that are accessible for supply delivery and have access to water and other resources necessary to support large numbers of people.
  • Many more examples.

Want more information? Here’s where to get it:

Tuesday roundup: High-speed rail and Asian carp

January 5, 2010 / / 0 Comments

A collection of links and news stories I liked yesterday, Monday, June 4, 2010, the first business day of a new year and new decade. I hope you’ve started on this new year’s resolution.

  • Riding The Rails: How $8 Billion in Stimulus Funding for High-Speed rail Could Change the Face of the midwest—or Get Derailed* (Mindful Metropolis – The article presents nothing new, but for novices on the topic, it combines all of the talks, plans, and dollar amounts that have been discussed over the past few years. New to me, though, is feedback from a meeting of train advocates and industry types at the Spertus Institute in October 2009. *Links to Flash version of entire magazine issue. Download accessible PDF, look for page 28.
  • Columnist warns of forced porch-sitting, with possible mandatory neighbor interaction (Sprawled Out) – John Michlig takes Milwaukee Sentinel writer to task about shoddy journalism and defends real, walkable neighborhood designs. Also, a mention of a new neighborhood design called “coving.”
  • ‘Fewer’ people use fast train (China.org.cn) – The world’s fastest high-speed rail opens in China (Wuhan to Guangzhou); two weeks later there’s subtle criticism of low ridership reports. China.org.cn is interesting; known as “China Internet Information Center” and “published under the auspices of the State Council Information Office and the China International Publishing Group in Beijing.” It’s hard to know what information comes from the government and what doesn’t.
  • Fight Against Asian Carp Threatens Fragile Great Lakes Unity (New York Times) – The State of New York has joined the State of Michigan’s lawsuit against the State of Illinois to force Illinois to close the waterway connection between Lake Michigan and the Mississippi River. The states fear that Asian carp will soon invade the Great Lakes and destroy the ecology. The State of Illinois operates eight locks and dams along the Illinois Waterway and Illinois River. See map below (made with Google My Maps).


View Lake Michigan to the Mississippi in a larger map

New Christmas present: GPS receiver and logger

December 25, 2009 / / 0 Comments

A bike ride around my dad’s neighborhood.

I got a GPS receiver and logger for Christmas. It’s a GlobalStar DG-100. More on the device later. Basically it records the location of every place it goes. It can even give you live, real time information; so far I’ve got this working in Windows, but not yet in Mac.

The GlobalStar DG-100. Not mine, from roland.

This map shows a bike ride around the neighborhood. I mistakenly set the device to only record points every 5 seconds. Obviously, in a bike, car or train, you can go far in 5 seconds and the route won’t match the road.

I want it mainly to use in automatically geotagging my photos, but I also want to use it to record my bicycling routes to track statistics like distance and speed.

Google Maps, the dynamic GIS system

November 27, 2009 / / 0 Comments

Earlier this year, Google Maps added a feature to the common maps interface that allows users to identify problems* with map data or presentation. Click on the “Report A Problem” link in the lower right corner of the current map view. Then drag the marker on top of the error, categorize it, then write a description of the problem.

I reported several problems soon after the feature was released. I checked up on the results of one problem I reported. The situation was the lakefront multi-use path along Lake Michigan in Chicago, Illinois. The screenshots below show the map before I reported the problem and the repaired map.

With this addition, Google Maps seems to be encroaching on the territory of Open Street Map (OSM) that uses ONLY public domain (not the same as free) and user-contributed data. But the data users contribute to Google Maps (in the form of reporting problems on the map) become the property of Google and its data providers.

From the OSM Wiki, “The copyright of the whole data set is scattered among all contributors. Some contributors release their contributions to the public domain.” Readers interested in learning more about maps in the public domain should read this Guardian article about the UK’s Ordnance Survey heavy grip on its data.

Disclaimer: I felt prompted to write this post because James Fee on his blog often (1st) writes (2nd) about the (low) quality of the data Google puts in its Maps.

*Users have long been able to report problems, but never in such an easy way or one that tracks reports and notifies the user when Google fixes the error.