Planet Georezo » January 10, 2011

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10 janvier 2011
23:15
MapDotNet Blog: Indexed PNG support added to MapDotNet
sur Planet Geospatial - http://planetgs.com

As of our 8.1.2000 release, MapDotNet now supports indexed 8-bit PNGs. 8-bit PNGs, while not lossless, are much smaller than 32 bit PNGs and look much better than GIFs. 32 bit full color PNG 62,450 bytes 8 bit indexed PNG 19
23:11
All Points Blog: Pitney Bowes Business Insights Coming Out of the Shadows?
sur Planet Geospatial - http://planetgs.com

Pitney Bowes Business Insights has been dark in recent months. We've not heard much about product news or company direction. As the company closes in on the fourth year since the acquisition that brought MapInfo into the Pitney Bowes fold, there's be...Read more

23:11
Pitney Bowes Business Insights Coming Out of the Shadows?
sur All Points Blog

Pitney Bowes Business Insights has been dark in recent months. We've not heard much about product news or company direction. As the company closes in on the fourth year since the acquisition that brought MapInfo into the Pitney Bowes fold, there's be...Read more

22:56
All Points Blog: Directions’ "Channels" Now with RSS Feeds
sur Planet Geospatial - http://planetgs.com

Last week when we launched our "Channels" our readers asked if we were going to offer them as RSS feeds. We listened an now each Channel has a corresponding feed.You can find those links on our RSS feeds page where each Channel is listed al...Read more

22:56
Directions' "Channels" Now with RSS Feeds
sur All Points Blog

Last week when we launched our "Channels" our readers asked if we were going to offer them as RSS feeds. We listened an now each Channel has a corresponding feed.You can find those links on our RSS feeds page where each Channel is listed al...Read more

22:49
geo.geek.nz: ArcGIS 10 Clear REST Cache Add-In
sur Planet Geospatial - http://planetgs.com

[UPDATED VERSION 1.0.2 AVAILABLE] One of the developers in our Professional Services Team (Dave Timmins) has written an exceptionally useful add-in for ArcGIS 10. For those that have ArcGIS Server’s, you would have run into the annoying step of...

22:13
Equipo GeoTux: video de evolución del desarrollo y crecimiento de QGIS
sur Planet OSGeo

Este video muestra la evolución del desarrollo y crecimiento de Quantum GIS. Desde 2002, este proyecto ha visto un crecimiento increible de funcionalidad y su comunidad de desarrolladores y usuarios, sobre todo en los últimos años.

Este video fue producido con la herramienta de código abierto Gourse, que permite crear una visualización del historial y dinámica de buena parte del código desarrollado en un sistema de control de versiones.

Tiempo total del video: 10 minutos.

Fuente: http://pvanb.wordpress.com
22:13
Equipo GeoTux: video de evolución del desarrollo y crecimiento de QGIS
sur Planet OSGeo

Este video muestra la evolución del desarrollo y crecimiento de Quantum GIS. Desde 2002, este proyecto ha visto un crecimiento increible de funcionalidad y su comunidad de desarrolladores y usuarios, sobre todo en los últimos años.

Este video fue producido con la herramienta de código abierto Gourse, que permite crear una visualización del historial y dinámica de buena parte del código desarrollado en un sistema de control de versiones.

Tiempo total del video: 10 minutos.

Fuente: http://pvanb.wordpress.com

Leer más...

21:17
AnyGeo - GIS, Maps, LBS, Geo and Social Location Technology: USGS PDF Maps iOS App Gets Update
sur Planet Geospatial - http://planetgs.com

PDF Maps iOS App Gets Update

We just heard from the developer (Avenza Systems) that their PDF Maps mobile app (iOS) has been updated. Recently updated by Avenza Systems, More than 55,000 USGS topographic maps are available through the PDF Maps Library to be downloaded and viewed using the PDF Maps app. The latest version of [...]
20:19
All Points Blog: Interior Secretary Salazar’s Chief of Staff Leaving
sur Planet Geospatial - http://planetgs.com

Tom Strickland, who serves as Secretory of Interior Ken Salazars chief of staff and as Interiors assistant secretary for fish, wildlife and parks, will leave that job next month to seek employment in the private sector. Laura Daniel Davis, Salaz...Read more

20:19
Interior Secretary Salazar's Chief of Staff Leaving
sur All Points Blog

Tom Strickland, who serves as Secretory of Interior Ken Salazars chief of staff and as Interiors assistant secretary for fish, wildlife and parks, will leave that job next month to seek employment in the private sector. Laura Daniel Davis, Salaz...Read more

19:41
Google Map of the Migrating Magnetic Poles
sur Google Maps Mania

Wandering of the Geomagnetic Poles

The Earth's magnetic poles are known to migrate over time. In fact the North Magnetic Pole has been observed to move up to 40 km in a year.

The National Geophysical Data Center has used Google Maps to trace the movement of the magnetic dip poles from 1590 to 2010. The map is based on four centuries of historical records including ship log data.

Each pole includes a marker to show the position of the dip poles at the turn of each century (1600, 1700, 1800, 1900 and 2000).

________________

19:30
Haïti, une crise sans fin ?
sur Les Cafés géographiques

Débat, "Haïti, une crise sans fin ?" avec Jean Marie THEODAT, Maitre de conférences de géographie, Université Paris 1, Dr Michel BRUGIERE, ancien Directeur général, Médecins du Monde et Hervé CHABALIER, Président-fondateur, Agence CAPA (sous réserve), le lundi 10 janvier à 19h30 au Snax Kfé, 182, rue St Martin, 75003 Paris (M° Châtelet-les Halles / Rambuteau / Etienne Marcel)

19:16
WeoBlog: Data Blog: Canadian EcoAtlas from GeoGratis
sur Planet Geospatial - http://planetgs.com

Enclosure: [download]

Recently I discovered just how much data the Department of Natural Resources – Canada has. The various types of GIS data they offer include scanned raster maps, DEM’s, transportation networks and multiple scale land-capability vectors. The best part about all of this data is that every single piece is entirely free and in the public domain under their Unrestricted GeoGratis License. The site also features an EcoAtlas containing a plethora of information such as the number of bird and mammal species per area, total annual precipitation, and types of landforms. The framework for the data is based around a four level structure:
- Ecozones: First level; 15 zones possessing similar ecological & physiological characteristics.
- Ecoprovinces: Second level; 53 areas created from more refined physiographic features.
- Ecoregions: Third level; 194 individually named regions based on prominent physiological/biophysical features in area.
- Ecodistricts: Fourth level; 1021 districts determined by homogeneous biophysical & climatic conditions.
The map displayed with the listing represents an even further generalization of the Ecozones, combining any similarly attributed zones together, i.e. Boreal Shield, Boreal Plains, & Boreal Cordillera. I would definitely recommend this as a beginning source to all those interested in the eco-analysis of Canada. Find the Canadian Eco data at WeoGeo Market today!

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If there is a dataset that you feel should be featured on the WeoGeo Data Blog, I encourage you to contact me at rhildebrand@WeoGeo.com
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Want to share or sell data? Sign up for a free Library account on WeoGeo.

Tagged: Data Blog, EcoAtlas, Free Canada Data, weogeo library
19:07
All Points Blog: New Version of Census’ OnTheMap App Helps Employers
sur Planet Geospatial - http://planetgs.com

The U.S. Census Bureau recently released Version 5 of this online mapping tool [OnTheMap]. It includes a number of important new features and enhancements including: the addition of data for Connecticut, new analysis types (including Area Comparison,...Read more

19:07
New Version of Census' OnTheMap App Helps Employers
sur All Points Blog

The U.S. Census Bureau recently released Version 5 of this online mapping tool [OnTheMap]. It includes a number of important new features and enhancements including: the addition of data for Connecticut, new analysis types (including Area Comparison,...Read more

19:02
ArcGIS 10: Notion de couches de requêtes
sur arcOrama, un blog sur les SIG, ceux d ESRI en particulier

Avec le développement des types spatiaux dans les principaux SGBD du marché, de plus en plus de données spatiales sont stockées directement dans les bases de données sans qu'elles contiennent forcement un modèle de données SIG avancé comme celui de la Géodatabase. Cependant, les utilisateurs d'ArcGIS peuvent avoir besoin d'accéder à ces données spatiales en tant que couches dans leurs

18:56
OSGeo News: FOSSGIS 2011 Konferenz, Heidelberg, Germany
sur Planet OSGeo

OSGeo News: FOSSGIS 2011 Konferenz, Heidelberg, Germany

18:33
500 millions d’amis, la carte de Facebook – 1) Déconstruction
sur Monde géonumérique

La carte des relations du réseau social à l’échelle mondiale parue sur le site de Facebook mérite une analyse. En voici le premier volet, consacré à un essai de déconstruction … Lire la suite →

17:22
The Map Room: Aerosols in Earth’s Atmosphere
sur Planet Geospatial - http://planetgs.com

NASA's Earth Observatory has this map of aerosols in Earth's atmosphere, based on MODIS data from August 2010. "Dust storms, volcanic eruptions, wildfires, and salt spray from the winds over the ocean are the most common and abundant producers of aerosols. Humans generate them, too, through the burning of...
17:16
The Map Room: Armelle Caron
sur Planet Geospatial - http://planetgs.com

French artist Armelle Caron uses maps in a couple of ways. First, have a look at her organized city maps, executed between 2005 and 2008, in which city blocks are taken apart and organized into neat rows. She does something similar with a world map in Le monde rangé,...

17:09
Experian dévoile le visage de la société française avec Mosaic
sur BalizMedia : Communiqués de presse

Experian dévoile le visage de la société française avec Mosaic

Un pays confronté au vieillissement de la population

Le Digital en plein essor

Experian, acteur mondial dans le traitement et l'analyse de bases de données B to C, lance ses nouveaux outils de segmentation de consommateurs, Mosaic. Cette nouvelle version de Mosaic France capitalise sur l’accès à un large éventail de données très précises pour segmenter les 26 millions de ménages français en 13 groupes, puis 56 types afin de permettre aux entreprises et aux hommes de marketing de mieux comprendre les consommateurs.
en lire plus
17:02
Étendre son SIG sur les appareils Microsoft Windows Phone
sur BalizMedia : Communiqués de presse

Meudon – Le 7 janvier 2011 - Esri vient de publier une API SIG (Système d'Information Géographique) pour la nouvelle plateforme Microsoft Windows Phone. L'API ArcGIS for Windows Phone peut être utilisée pour créer des applications interactives combinant des ressources cartographiques (telles que des cartes, des localisateurs, ou encore des modèles de géotraitement) avec les technologies et les composants de Windows Phone (barre d'applications, contrôles, ou encore fonctions de localisation).
en lire plus

16:47
Sean Gillies Blog: Upcoming geospatial tutorial at PyCon
sur Planet Geospatial - http://planetgs.com

Roy Hyunjin Han, of the Modi Research Group at Columbia University's Earth Institute, presented at PyCon in 2010 and will be running a hands on tutorial at the 2011 edition: Geospatial Computation and Visualization Cooperative Lab. I'm pleased to see Shapely in the mix.

16:47
Sean Gillies: Upcoming geospatial tutorial at PyCon
sur Planet OSGeo

Roy Hyunjin Han, of the Modi Research Group at Columbia University's Earth Institute, presented at PyCon in 2010 and will be running a hands on tutorial at the 2011 edition: Geospatial Computation and Visualization Cooperative Lab. I'm pleased to see Shapely in the mix.

16:00
Off the Map - Official Blog of FortiusOne: Twitter Trajectories and Our Ever Shrinking Small World
sur Planet Geospatial - http://planetgs.com

When we were doing the Twitter Black Friday analysis I started to get curious about how Tweets can give us insights to the trajectories of people. Lots of folks travel over Thanksgiving and likely even more get out of the house on Black Friday to do some shopping. We were curious how far from home people were Tweeting on Black Friday and what those trajectories look like.

To answer the question we took advantage of the variety of metadata made available through Twitter streaming API. We’d already mapped the location of Tweets from mobile devices when we did our original analysis and now we wanted to add an origin to the destination data. To get a rough proxy for the home of each Tweet we queried the profile location for each user then connected it to the location for where the Tweet was made. Then generated lines to connect the two, calculated a distance for each and gave the time stamp of the Tweet to the line connecting the points.

The results are pretty interesting (warning the live map has a lot of data a takes a bit to load). Below is an image of the map showing all 12,244 trajectories:

Each trajectory is color coded by it’s length – dark orange being longest and light orange being shortest.

One of the nice things about GeoCommons is when you upload data it will automatically calculate statistics for your data. In this case the statistics tell an interesting story. The range of trajectory lengths went from “0″ (user tweeted from home) to 33,296 km (user went from Los Angeles USA to Auckland New Zealand).

The average (mean) Tweet trajectory was 944 km. This is a little misleading since the standard deviation for the sample is so high – 3544.63. Meaning there was a lot of variation in the values with really long trips like LA to Auckland which skews the distribution. In this case a better indicator is probably the median, which is the middle number in a rank order distribution of the values (1,2,3,5,10,10,11,12,12,13,135 -> median = 10). For the Twitter trajectories the median was 18 km. Which means the vast majority of people stayed fairly close to home while a small minority went very far away for their Black Friday activities. You can see the same pattern in a histogram of the data.

As well as in the map when you filter down to trajectories shorter than 166 km – there are a bunch!

The vast majority of Tweet trajectories fall in the bin between 0 and 160 kms or so. If we really want to get geeky about it – the distribution has power law or exponential characteristics often seen in small world networks. The majority of our connections are local but a few global connections is what allows information to efficiently span the globe at warp speed – six degrees of speration – the Kevin Bacon Game etc etc. It does seem to really get at the essence of Twitter as a hyper efficient broadcast channel for the globe.

* Many thanks to @BillfGreer and @cwhelms for help with the data munging!
15:45
The Map Room: Brain Pickings on Map Books
sur Planet Geospatial - http://planetgs.com

Brain Pickings's 7 Must-Read Books on Maps is heavy on the art side of the map book world, and includes some very familiar titles. Via @cartografie....
15:38
The Map Room: Northern and Southern Sudan
sur Planet Geospatial - http://planetgs.com

Speaking of Africa, BBC News has put together a page of maps of Sudan that illustrate the differences between northern and southern Sudan. Southern Sudan is at the moment voting on whether to declare independence from the north. Via @HodderGeography....
15:30
Off the Map - Official Blog of FortiusOne: Looking Forward to 2011
sur Planet Geospatial - http://planetgs.com

I love January. The cold weather that forces you to enjoy the warmth of a fire, the crispness of a morning snowfall, and the feeling that you’ve just hit the reset button and anything is possible. We’ve rested from the holidays, recovered from our families and festivities, and we see the horizon of 4 seasons and 12 months laying before us, beckoning imagined wonders of new ideas, friends, and opportunities realized.

As with every new year, the community is buzzing with predictions of maturing markets and potential new trends. 2010 was widely considered the “Year of Geo” and definitely demonstrated very excited and numerous launched companies and products that featured location, maps, and mobile as key features.

At FortiusOne, we launched a number of new features and partnerships that already have set the stage for an exhilarating 2011. Appcelerator’s Titanium+Geo, powered by GeoIQ, will provide over 100,000 developers with in-depth analytics on the usage of their mobile applications. In December, our 12 days of Analytics gave a sneak peek to our industry changing collaborative analytics. And we have a wide array of new features, products, and amazing customers that will be launching their tools in the beginning of the year.

Sharing Ideas and Technology
In 2011, there are even more location conferences, but I’m particularly looking forward to the good ol’ ones like Where2.0 and WhereCamp. We’re speaking at Where2.0 on some yet to be announced news, and even hosting a WhereCampDC for the first East Coast WhereCamp! FOSS4G 2011 and State of the Map both come to the US and will be hosted in the town of our newest engineering office in Denver – so we’ll have a strong showing there to share with the community on open-source software and open-data.

Last year we open-sourced our geocoder and it’s been picked up by several organizations and continues to provide the best, open geocoding out there for unlimited geocoding. This year we’ll continue working with the community on making it an open and powerful technology – as well as a number of open-source projects we’ll be releasing soon that will help information and knowledge sharing and analysis all over the world.
Trending…
With 2010 a year where “Geo” entered the vernacular of companies and consumers, there is certainly a lot that is set to change. Lets see just a few possible trends we’ll see over the next 12 months.
Consumer Mobile and Privacy
Clearly mobile phone geolocation services are becoming nearly ubiquitous. Every application is incorporating some amount of geo, from social networks, to music and games, to note taking and to-do applications. We’re each creating a continuous and highly-accurate stream of our activies and locations. People will want to better integrate this capability to help bring them better contextual awareness of their environment, what to do, where to do it, and remember what they did. But as a consequence, we’ll begin seeing both real and perceived issues relating to privacy of this data. So far, the government and oversight organizations have only watched the increasing adoption of location-technologies, but they will need to come in soon to provide guidance, assurance, and verification of the protection and handling of this sensitive data. Hopefully in 2011 the dialogue can grow to share ideas, practicies and prevent any catastrophes, but likely there will be several major news stories about malicious activity due to leaked location data that will cause an immediate backlash.
Commercial Data -> Open Data
Open data has moved past a questionable possibility into a definite reality. Crowd-sourced data, opened information, and free services have dramatically reduced the barriers to accessing vast amounts of quality resources on places, environment, and people. There is, and will continue to be a profitable data market – but at a dramatically decreasing value. Open data is proving to be sufficiently accurate and more usable by companies, products, and organizations that want to utilize information in interesting and novel ways without concern of high costs or inappropriate use. Through 2011 we’ll see more free and open sources for what used to be considered very expensive, and while we won’t see an end to data markets – there will always be people that need complete hand holding and service support – there will not be a need for commercial data for a majority of location application and services.
Visualization -> Analysis
Visualization has increasingly become a way to deal with “big data” that is available through the plethora of API’s, social networks, and open government data. Polymaps opened a lot of eyes to the capabilities of rich mapping without Flash using SVG. There is a lot more to do here – maybe never to the full extent that Flash can do, but also many that it can’t do as well and be more integrated with the web. HTML5 client-side support, geolocation specification, workers, and other technologies are going to make our experience using location and mobile applications richer and more integrated. GeoIQ already supports output to at least 15 file formats – most of which users aren’t even aware of – which forms a base for quickly building new and innovative applications.

Beyond just visualizing the data, the industry is maturing and beginning to ask deeper questions of the data. Analysis will become more mainstream. Users want answers – like Quora for data. Traditionally analysis has been limited to a small number of trained experts using complex tools. In 2011, this will move out of the back-office, users and citizens will want to understand and gain insight into their own behaviors, which will only further enable understanding by organizations in how to better engage and provide valuable services.
A new decade…
Regardless if these predictions are correct or not – the next year, and the next decade – are clearly going to be incredibly exhilerating. We have a lot planned in even just the next few months – and not doubt the unforeseen changes that we will all experience will open even more possiblities. I’m looking forward to our careening adventure!
15:30
The Map Room: Africa’s Ethnic and Linguistic Divisions
sur Planet Geospatial - http://planetgs.com

A New York Times map of Africa's ethnic and linguistic groups, representing "only the broadest ethnic and language groupings," shows how much they differ from national boundaries (which the newly independent nations accepted as a necessary expedient in 1963). Via @mrgeog....
15:27
Spatial Sustain: GeoDesign Takeaways Range from Cautionary to Wildly Optimistic
sur Planet Geospatial - http://planetgs.com

Takeaways from last week’s GeoDesign Summit are mixed as I continue to process what I learned at the event. While on the one hand there have been some amazing advancements in one year’s time from the inaugural event, the barriers to widespread adoption are formidable. I pulled together an event report to summarize some of [...]
15:05
All Points Blog: Education Tidbits
sur Planet Geospatial - http://planetgs.com

You can take a tele course (two classes a week for a total of 10) based on the book GIS(Geographical Information Systems) Essentials. The course is from New Urban Research. Cost: $1000 includes the book but not ArcGIS 10, which is required. Daily ...Read more

15:05
Education Tidbits
sur All Points Blog

You can take a tele course (two classes a week for a total of 10) based on the book GIS(Geographical Information Systems) Essentials. The course is from New Urban Research. Cost: $1000 includes the book but not ArcGIS 10, which is required. Daily ...Read more

15:02
GIS Lounge: Editing in ArcGIS 10
sur Planet Geospatial - http://planetgs.com

There are a few quick guides from Esri for learning about the data editing environment in ArcGIS 10. First the is “Editing in ArcGIS 10: An Overview” pamphlet available in PDF format. The document quickly outlines the basic steps taken when editing data in ArcGIS 10. Also available online is the “Quick Tour of Editing” [...]
14:45
All Points Blog: Rep’s Plan: Legislation to Limit Threaten Language/(Map) Symbols
sur Planet Geospatial - http://planetgs.com

Rep. Robert Brady, D-Pennsylvania, said he will introduce legislation making it a federal crime for a person to use language or symbols that could be perceived as threatening or inciting violence against a Member of Congress or federal official. ....Read more

14:45
Rep's Plan: Legislation to Limit Threaten Language/(Map) Symbols
sur All Points Blog

Rep. Robert Brady, D-Pennsylvania, said he will introduce legislation making it a federal crime for a person to use language or symbols that could be perceived as threatening or inciting violence against a Member of Congress or federal official. ....Read more

14:12
Edmar Moretti: Grade de cores no i3Geo
sur Planet OSGeo

O i3Geo, software para criação de mapas interativos, possui um editor de legenda, que permite definir como uma camada existente no mapa será apresentada. O editor permite estabelecer as classes, e os respecitivos estilos, para representar os diversos elementos que compõem a camada.

A definição das classes pode ser feita manualmente ou por meio de técnicas automáticas, como quartis, intervalos fixos, etc. Após a definição das classes, o usuário pode editar os estilos de cada classe, definindo o símbolo a ser utilizado, cor, etc. Essa definição também pode ser manual ou automatizada, por exemplo, o usuário escolhe uma cor inicial e uma final e o software escolhe o conjunto de cores.

Nessa mesma linha, implementei uma nova funcionalidade que possibilita que o usuário escolha a grade de cores para ser aplicada ao conjunto de classes, ou seja, escolhe-se uma grade pré-definida e o intervalo inicial e final de valores. O resultado é mostrado na figura abaixo.

14:05
Budget Eats Google Map
sur Google Maps Mania

Britain's Best Budget Restaurants

The Guardian newspaper has created a Google Map of the best budget restaurants in the UK. The map shows the locations of the restaurants featured in the paper's 'Britain's Best Budget Eats' column in the last two years.

It is possible to select a city view from a drop down menu. If you choose a city the map zooms to the correct location and also loads the restaurants in the map sidebar. If you click on a restaurant's marker you can read The Guardian's review and get the restaurant's address.

________________

13:56
gvSIG Team: SIG y Cooperación
sur Planet OSGeo
Los Sistemas de Información Geográfica (SIG) son una herramienta que nos permiten tener un mayor conocimiento sobre el territorio, ayudan a mejorar la gestión de una región y de sus recursos y posibilitan la realización de análisis complejos sobre multitud de parámetros del territorio. Todas estas ventajas de los SIG hacen que el empleo de esta tecnología en los proyectos de cooperación al desarrollo cobre una vital importancia.

Pero como toda tecnología que se transfiere Norte-Sur, hay que prestar especial atención en como se realiza. Existe para ello el concepto de tecnología apropiada, que no tiene una definición como tal, ya que es un concepto relativo, una tecnología puede ser adecuada en un lugar concreto, pero puede no serlo en otro. Sin embargo si existen unas características que una determinada tecnología debe cumplir para considerarse apropiada:
- Respetar las tradiciones y la cultura local.
- Respetar el medioambiente y ser sostenibles.
- Sostenibilidad social, los receptores de la tecnología deben ser capaces de mantenerla y deben tener los conocimientos necesarios para hacerlo.
- Fomentar la participación de las comunidades locales en la aplicación de la tecnología.
Si nos centramos en el caso de los sistemas de información geográfica, vemos fácilmente que cualquier SIG libre, como es el caso de gvSIG, cumple todas y cada una de éstas características, ya que el software libre es en sí mismo una tecnología apropiada. Puede ser adaptado a las particularidades culturales de cualquier región, además de a su idioma, mediante procesos de localización. Es sostenible, ya que las 4 libertades garantizan que cualquiera tenga acceso a los conocimientos necesarios para mantener la tecnología. Fomenta la participación, ya que el desarrollo en los proyectos de software libre se hace involucrando a los usuarios.

Por estos mismos motivos, los sistemas propietarios o privativos no pueden ser considerados una tecnología apropiada a pesar de que en ciertas situaciones su coste sea cero, y es que no todo vale en cooperación.

Cuando se alfabetiza tecnológicamente una región se tiene una responsabilidad muy grande sobre la tecnología que se introduce, y además de ser ésta una tecnología apropiada hay que garantizar que no se crea ninguna dependencia sobre ella.

Filed under: community, opinion, spanish

13:40
Google Earth Blog: Unbroken: Louis Zamperini’s journey in Google Earth
sur Planet Geospatial - http://planetgs.com

Last year, Laura Hillenbrand released a book titled "Unbroken: A World War II Story of Survival, Resilience, and Redemption", based on the life of Louis Zamperini (details on Amazon). The book has been very popular, quickly becoming a best-seller and recently being picked up by Universal Studios to be turned into a movie.

The life of Zamperini is amazing, and the book is excellent. Zamperini, a world-class runner that competed in the Berlin Olympics in 1936, is drafted into World War II. He fights a number of missions before his plane goes down and he's trapped in a raft at sea. After 46 days at sea, he floats into the Japanese-controlled Marshall Islands, and he's placed in various POW camps for the next few years.

In reading the book about his journey, I realized that it would pretty cool to track down his various missions and POW camps in Google Earth. I was right! However, I was unable to find a decent timeline of his life, so I spent a few hours researching it and created one myself. After that, I did more research to find all of those locations in Google Earth and ended up with a pretty cool file.

The file includes locations from his early days (homes, school), the various places he went for military training, the Pacific missions he completed, the POW camps he was placed in, and the various stops on his journey home. You can download the KMZ file here to try it for yourself.

[File updated 1/10/11 with his home address in Olean, NY -- thanks Alec]

I had hoped that historical imagery might come into play with this, but the old imagery in the Pacific and Japan doesn't go back nearly far enough (as opposed to Europe, where many locations have historical imagery dating back to the mid-1940's). However, one good example was Hamilton Field, where he stopped over on his way to Hawaii. The present-day imagery no longer shows a runway, but if you switch to the 1993 imagery you can clearly see the runway still there.

All of that being said, I'm sure the file isn't perfect. If you make any corrections to it, please email me the updated version (mickey@gearthblog.com) and I'll update this post.

So, have you read the book? What did you think of it?
13:37
got geoint?: Monday Morning News Kick Off: Gates to Boost Military Intelligence; NGA Transitions Out of Bethesda and Much More
sur Planet Geospatial - http://planetgs.com

Welcome to the Monday Morning New Kick Off post from got geoint? As always, we hope you had a restful weekend and are super charged to take on the second official work week of 2011. Well, the GEOINT sector is backin full force — what holiday break? And, this is a good thing. Following are stories about Defense Secretary Gates boosting military surveillance, NGA transitioning out of Bethesda, and much, much more. As we always say, fire up that second cup of coffee and read on. Happy Monday!

Gates Moves to Overhaul, Boost Military Intelligence
In a little-noticed move, the plan by Defense Secretary Robert Gates to reorganize the Pentagon’s budget includes an overhaul of military intelligence programs as well as increased spending on intelligence and surveillance capabilities. While the plan outlined by Gates on Thursday would cut $78 billion from the Pentagon’s budget over the next five years, it also includes significant actions affecting military intelligence operations and spending. For example, Gates said he wants to consolidate intelligence organizations that are “excess and duplicative” while buying more platforms like the Air Force Reaper unmanned aerial vehicle and the Army MC-12 reconnaissance aircraft. Read the full Government Executive post here.

National Geospatial-Intelligence Agency Begins Transition Out of Bethesda This Month
Businesses in the Shops at Sumner Place mall on Sangamore Road don’t foresee a knockout blow to sales once their next-door neighbor, the National Geospatial-Intelligence Agency, moves its headquarter across the Potomac in coming months. NGA, a Department of Defense combat support agency, is relocating to Fairfax County’s Fort Belvoir this year as part of the federal Base Realignment and Closure process. The site’s 3,000-member staff at the Bethesda location will begin transitioning this month and will be fully relocated by September. The loss of these potential customers didn’t seem to faze business owners in Sumner Place. Many owners said the nearby neighborhood customers drive their sales. The NGA staffers tend to do their shopping around lunchtime during the week, the businesses said. Read the full Bethesda Patch post here.

Driver Beats Speeding Fine with Google Earth
A man won the right to appeal his speeding fine and had his traffic conviction quashed after using Google Earth to allege the police officer may have issued the ticket to the wrong car, the Townsville Bulletin reports. Mustafa Al Shakarji, 24, was ordered to pay a $200 fine and court costs of $71.50 after a magistrate in Bowen, about 1200km north of Brisbane, refused to accept all of his evidence when he represented himself, the Townsville Bulletin reports. But the fourth-year James Cook University pharmacy student will attempt to overturn the speeding fine a second time after the Brisbane District Court ordered a re-trial in the Townsville Magistrates Court. Read the full Herald Sun article here.

GeoEye Names Steven P. Wallach to New Position of Senior Vice President of Product Integration
GeoEye Inc., a premier provider of superior satellite and aerial-based geospatial information and services, announced today that it has appointed Steven P. Wallach to the new position of senior vice president of Product Integration. Mr. Wallach joined GeoEye on Jan. 3, 2011, and is located at the company’s St. Louis value-added production facility. GeoEye’s Chief Operating Officer Bill Schuster said, “Steve was part of the senior leadership group at the National Geospatial-Intelligence Agency (NGA) and is recognized as a leader in the geospatial industry. At GeoEye, he will leverage his extensive geospatial experience and leadership skills to identify new product opportunities and lead their integration into our portfolio. Steve will work closely with all elements of the business to develop detailed business plans as part of our product rollout strategy.” Read the full GeoEye press release here.

Sudan’s First SMS-Powered Voting Monitor Tracks “Violence,” “Intimidation”
While Sudanese vote about the fate of South Sudan’s independence, one Sudan-born Texan supports the voting process from afar with a historic mobile-powered monitoring tool. Fareed Zein came to the United States from Sudan in 1981 to pursue a college education in computer science. One of the lucky ones, his family could afford his departure and his education, and he left before civil war rattled his homeland. Zein now spends his time–outside of his day job in oil and gas in Houston, Texas–directing the technology committee of the Sudan Institute for Research and Policy, a non-profit research organization started by his sister, a professor at a liberal arts college in Pennsylvania. Read the full Fast Company post here.

EBay Augmented-Reality App Lets You Try It On Before You Buy
One of the problems with ordering clothing online is not knowing whether it will fit or look good. EBay has a technology fix for that using augmented reality on the mobile phone. Now you will never have to go to the mall! The feature launched in Apple’s App Store yesterday as part of an update to eBay’s mobile app that launched five months ago. There are two options: Try on sunglasses with “See It On” or build an outfit with “Outfit Builder.” “See It On,” iPhone 4 owners can take a picture of themselves using a forward-facing camera and then pinch and zoom to fit the glasses to their face. Users can choose from a small section, including Aviator, Wayfarer or Rimless, in various colors. From there, they can search for matching listings on eBay. Pretty cool huh? Check out the All Things Digital post here.
13:23
OpenGeoData: skobbler introduces MapDust.com: A state-of-the-art bug solution
sur Planet Geospatial - http://planetgs.com

Enclosure: [download]

There is a huge gap between passive and active OSM users. In most regions, the map is maintained by a small number of users. Not everyone who intends to improve the map is capable of doing so. OpenStreetMap editors require a learning curve, as editing a map is not intuitive.

However, there seems to be a much broader willingness to improve the map through the feedback channel. The GPS turn-by-turn navigation skobbler receives up to 1.000 suggestions for improvement per day. We have seized this suggestion and extended the skobbler feedback channel to an independent bug tool for the OpenStreetMap community: MapDust.com – a state-of the art bug tool.

Bugs can be accessed through the Geo-RSS feed and the MapDust JOSM plug-in

The integration of the feedback channel has significantly simplified providing bug reports for the consumer. The number of incoming suggestions was overwhelming, even if not all of the reports have been helpful or relevant. To date, the feedback channel has been focused on the consumer, and that this why many of the bug reports “got stuck in the channel”.

We are now working on the other – the mapper’s part – to create a Geo-RSS feed and a JOSM plug-in to distribute the bug reports to the location where they can be processed.

Why create a new tool if similar solutions exist?

We have seen that OpenStreetMap editors are very advanced. However, the tools for consumers to provide input have been neglected. Great editors like JOSM and Potlatch (2) exist as well as tools like the OSM Inspector. We want to provide a system where more input and contributions are received from people who only contribute on an occasional basis.

Filter allows a selective approach towards bug types

We simply wanted to increase the number of contributions by designing a slick and lean user interface. We see enormous potential to improve the map in many different aspects such as bus stops and house numbers.

We have received comments that the skobbler feedback channel contained bugs that are only very selectively relevant. Therefore, with the integration of filters, one can hide bugs that are not of interest.

The Geo-RSS feed

You can submit suggestions and change requests for a specific region by selecting the desired map view, setting the filters and pressing the “subscribe RSS feed” button.

Once subscribed, you are provided all new bugs that match the selected region and filters. Each feed post contains a small map view and the corresponding data as well as links to open the bugs directly in the JOSM or Potlatch editors.

The wish list

Most of the MapDust features have been documented in the Wiki. We have also included a section entitled “wish list”. If there is anything you would like to see changed or added, please add your request to the wish list.

We wish you a happy 2011 and happy bug fixing!

Your skobbler Team

Permalink | Leave a comment »
13:08
The Aerial Blog - aerial-survey-base: What is a RAID?
sur Planet Geospatial - http://planetgs.com

RAID? RAID (Redundant Array of Independent Disks)is a technology that employs the simultaneous use of more than 2HDD to achieve greater levels of performance,...RAIDs are used in Post Processing Servers, but also in aerial cameras (e.g. Ultracam D), for performance or data security reasons.
13:00
All Points Blog: LBS Tidbits
sur Planet Geospatial - http://planetgs.com

Neer, once only on Android is now available for iOS. The big deal? Share your location with only selected people. Neer aims to help everyday mobile users read: not the badge hungry types automatically share their whereabouts with their most tr...Read more
13:00
All Points Blog: Estonian Coin’s Map: Russia Included?
sur Planet Geospatial - http://planetgs.com

Estonia's introduction of the euro has sparked controversy after it was claimed that a map of the tiny Baltic country on the new Estonian one euro coin appears to include a chunk of neighbouring Russia. Mistake or was it a provocation? - The Tele...Read more
13:00
All Points Blog: International Tidbits
sur Planet Geospatial - http://planetgs.com

Ireland Ireland may have postcodes by year's end. The Cabinet agreed to the procurement system for the national postcodes at its last meeting before Christmas, Minister for Communications Eamon Ryan has confirmed. The process to award the contra...Read more
13:00
All Points Blog: Noveck, director of the US Open Gov Initiative, Deputy CEO to Return to Teaching
sur Planet Geospatial - http://planetgs.com

Beth Noveck, director of the White House Open Government Initiative, and U.S. deputy chief technology officer, will return to academia as a professor of law at New York Law School on January 15th 2010. - GovLoop and GovFresh via @@GeoDataPolicy...Read more

13:00
International Tidbits
sur All Points Blog

Ireland Ireland may have postcodes by year's end. The Cabinet agreed to the procurement system for the national postcodes at its last meeting before Christmas, Minister for Communications Eamon Ryan has confirmed. The process to award the contra...Read more
13:00
LBS Tidbits
sur All Points Blog

Neer, once only on Android is now available for iOS. The big deal? Share your location with only selected people. Neer aims to help everyday mobile users read: not the badge hungry types automatically share their whereabouts with their most tr...Read more

12:06
Zac Spitzer: MapGuide 2.2 RC testing with PostgreSQL (Success)
sur Planet OSGeo

I tried out the newer FDO PostgreSQL driver for PostGIS in the latest MapGuide 2.2 RC2 beta
with a local PostgreSQL db on Windows 7 64-bit (32-bit version of MG),

result? it works really well

Just make sure your not using version 9 of PostgreSQL , FDO 3.5 doesn't
support v9 yet, FDO 3.6/ MapGuide 2.3 will

I ended up downloading and installing the db twice as I forgot about
the lack of support for 9.0 with FDO 3.5

Remember! you need to make sure the libpq.dll's are in your system path

[trac.osgeo.org]

My testing was with some OSM (openstreetmap) data for Victoria, Australia
which I downloaded and loaded with osm2pgsql (use -s if you don't have lots of ram)

http://downloads.cloudmade.com/oceania/australia/victoria

IMHO, the OSM shapefile's have a nicer data structure than how the
OSM files get imported by default into PostgreSQL

Alas, the shp files have ":" in the column name which breaks SHP FDO,
PostgreSQL FDO works fine with these, translating them to _

but you can load the shape files easily into Postgres

lack of ordering support in MapGuide does still leave proper road rendering
rather inanely complex, [trac.osgeo.org]

PostGIS rocks, faster than Oracle and free! Oracle's spatial licensing is so like 1990's

I wrote this, coz I figured it's important to tell some software success stories,
often people only post about problems, which can be depressing when your searching

[mapguide-central.ennoble.com.au]
12:05
Equipo GeoTux: QGIS seleccionado como solución SIG empresarial en Australia
sur Planet OSGeo

De un estudio de las aplicaciones SIG de Software Libre y de Código Abierto, la consultora australiana Spatial Visión seleccionó a Quantum GIS como solución para el departamento de medio ambiente de Victoria, demostrando un caso de éxito de aplicación de herramientas geoespaciales de código abierto en el mundo empresarial.

Para la evaluación se definieron un conjunto de 95 criterios funcionales y 20 criterios no funcionales, y en total se evaluaron 38 productos de SIG de escritorio, destacando categorías de software de código abierto, privativos y gratuitos.

Inicialmente fueron pre-seleccionado 9 productos, como etapa final se evaluaron los productos de código abierto gvSIG y Quantum GIS para la presentación a los interesado en el proyecto. En conclusión Quantum GIS fue el mejor en funcionalidad y usabilidad.

El estudio también concluye que a pesar del cambio de productos privativos a fuente abierta en el departamento de medio ambiente de Victoria , se obtiene un ahorro sustancial a largo plazo, sin embargo no implica un cambio total de la solución SIG que por muchos años está basado en ArcGIS.

Fuente: http://www.spatialvision.com.au
Lista de correo de usuarios de QGIS.
12:05
Equipo GeoTux: QGIS seleccionado como solución SIG empresarial en Australia
sur Planet OSGeo

De un estudio de las aplicaciones SIG de Software Libre y de Código Abierto, la consultora australiana Spatial Visión seleccionó a Quantum GIS como solución para el departamento de medio ambiente de Victoria, demostrando un caso de éxito de aplicación de herramientas geoespaciales de código abierto en el mundo empresarial.

Para la evaluación se definieron un conjunto de 95 criterios funcionales y 20 criterios no funcionales, y en total se evaluaron 38 productos de SIG de escritorio, destacando categorías de software de código abierto, privativos y gratuitos.

Inicialmente fueron pre-seleccionado 9 productos, como etapa final se evaluaron los productos de código abierto gvSIG y Quantum GIS para la presentación a los interesado en el proyecto. En conclusión Quantum GIS fue el mejor en funcionalidad y usabilidad.

El estudio también concluye que a pesar del cambio de productos privativos a fuente abierta
Leer más...

12:01
Google Maps in the News
sur Google Maps Mania

The Guardian and The New York Times are both regular users of Google Maps. It is interesting how each of these two news organisation take a different approach to their use of the Google Maps API.

New York Times' New York City Homicides Map

Whilst The Times, under the guidance of graphics editor Matthew Bloch, usually produce stunningly designed data visualisations The Guardian tend to produce more simple maps with the emphasise on open data.

Many of The Guardian's Google Maps are released as part of the paper's Data Store. The Data Store is part of The Guardian's mission to "make data truly free". The Guardian's aim is to publish the raw statistics behind the news and make it easy to export the data.

The Guardian's Wikileaks Data Journalism Map

The Guardian therefore often produce Google Maps using Google Fusion Tables. These maps tend therefore to be a simple representation of the data with the emphasise that other developers are free to download the data and create their own visualisations.

________________

11:11
_article caché
sur GeoConcept

10:57
Simone Giannecchini: Developers Corner: Improving GeoTools/GeoServer raster reprojection performance
sur Planet OSGeo

Ciao a tutti,
we hope everybody had nice seasonal holidays and is back fresh and ready to move on with another year of activity.

In this blog we'd like to present some of the work we have been doing in recent time to improve GeoTools and GeoServer raster reprojection abilities.

Raster reprojection is a quite heavy process in which every single pixel of the original image has to be mapped into a new position in the target raster. Here is a visual representation of a small set of pixels, before and after the reprojection (in this case, from WGS84 to polar stereographic):
A point by point reprojection is obviously taking quite a toll, a screen sized image has easily well over one million pixels to reproject, much more than the number of vertices one can find in the common vector map. To make things worse, the transformation to be used often involves trigonometric functions and other complex mathematical tools that visibly slow down the calculation.

The reprojection algorithm used by GeoServer and GeoTools until now worked exactly like that, it used a very accurate but also very slow approach.

Now, if you think about it, the transformation applied to one pixel and the one applied to the next one are basically the same, the difference is going to be minimal.If we only had a small bunch of pixels we could compute a simple translation and apply it to them all.
Having more pixels we could try to approximate the overall transformation with a simple linear one, which in two dimensional space is known as an affine transformation.

If the area gets larger a single affine transformation would not be good enough anymore, but we could use many of them to fit different areas of the raster.

Have a look at the following one dimensional representation to get the gist of the idea (this is known as piecewise linear function):

The trick to apply this approach if finding out where and how much to subdivide the original area into discrete pieces that can use a single affine transform: to do so we devised a simple error estimation method that proved to work well with all common map projections.

So we start by evaluating the linear transformation error over the entire raster area, if it's larger than a certain target we split the area and evaluate again, and recurse this way until the approximation error has been put under control.

The optimized method proved to be quite effective, drastically reducing the time it takes to reproject a raster. We made some tests with GeoServer using the same data and the same reprojection test used in the FOSS4G 2010 WMS shootout measuring a six times speedup:

We also compared the images generated by the original and optimized method finding there was hardly any human noticeable difference, and very little difference that could be machine detected at all.

For all of you that want to dig into the nitty-gritty details, we have a full tech report that you can inspect.

There is still plenty that can be done to optimize further raster data reading and in memory transformations to reach even higher performance and scalability. Interested? Let us know!

The GeoSolutions team
9:54
GIS-Lab: Road-Graph для QGIS
sur Planet OSGeo

Новое расширение для QGIS и сопровождающая статья-описание. Расширение предназначено для поиска кратчайшего расстояния на графе дорог. В качестве слоя дорог может использоваться любой линейный векторный слой в формате, поддерживаемом QGIS. Например данные OpenStreetMap.

Автор расширения — Сергей Якушев (stopa85).

Ознакомиться с возможностями модуля, обсудить на форуме.

9:37
SPATIALITES ET TEMPORALITES DU WEB
sur Géographie 2.0

Dans 15 jours se tiendra la prochaine journée PraTIC dont je vous laisse découvrir le programme alléchant. 4ème cycle annuel des Journées d’étude PraTIC : SPATIALITES ET TEMPORALITES DU WEB Le lundi 24 janvier 2011, à Gobelins, l’école de l’image, salle de conférence 318 Accès gratuit sur inscription obligatoire en ligne : [www.doodle.com] (150 places [...]

9:00
L’actualité « géoloc » de ces derniers jours (fin décembre 2010)
sur GeoInWeb
Voici un petit résumé de l’actualité « géolocalisation » de ces derniers jours que j’ai pu noté.
- Excellente utilisation de Google Maps API v3 pour une carte de voeux : [voeux2011.digitas.fr] (via @Zorgloob)
- Google Maps API optimise son chargement en introduisant les « library » par fonctionnalité
  Explications sur Google Geo Developer Blog
- GPS : la grosse offensive de Garmin au CES 2011
  Garmin a dévoilé une nouvelle gamme de terminaux portables censées couvrir de multiples usages, soit « une solution GPS pour tous ». Tous les détails sur Presse-Citron.
  
  De plus, Garmin sort enfin une application sur iOS, StreetPilot, disponible uniquement pour le moment sur l’App Store US. Plus de détail sur Generation NT.
- OWNI propose un mashup présentant les nouvelles caméra de surveillance à Paris
  Le mashup sur Google Maps se trouve ici. OWNI explique la méthode qui leur a permis de géolocaliser les lieux suite à l’arrêté préfectoral. Pourtant seul 90% des lieux ont pu être précisément géolocalisés. OWNI propose aux citoyens d’aider à compléter la liste.
- SCVNGR lève 15 Million de $ (pour une valeur de 100 Million de $)
  Le jeu social et géolocalisé vient de réaliser une nouvelle levée de fond.
  [via TechCrunch]
- La géolocalisation dans une campagne marketing
  Très bon article sur le rapport marketing / géolocalisation par @cath_woman et @louisandre
- Bing Maps intègre les itinéraires de transport en commun dans son API REST
  Toutes les informations ici.
- Les cartes qui aiment être froissées !
  Le designer italien de chez Palomar, dont les idées sentent le vécu, a imprimé cinq plans de ville (Londres, Paris, Berlin, Rome et New York) sur des cartes à froisser « telles qu’on les a toujours rêvées »
  
  [via Ecrans]
- Envoyer une carte de voeux avec Google Maps
  C’est par ici.
- MapQuest lance sa version basée sur OpenStreetMap aux U.S.A.
  En espérant que cela profite au mieux à Open Street Map : [open.mapquest.com]
  
  [via TechCrunch]

8:40
SEXTANTE Team: Sobre la Ley Sinde, los creadores y otras historias.
sur Planet OSGeo

En estos tiempos en que la Ley Sinde está en boca de todos y en buen número de ocasiones para decir bastantes tonterías, quiero aportar mi granito de arena a la discusión desde este blog. Tratándose del blog de un software libre, mi postura al respecto no debiera sorprender a nadie, pero aún así creo que siempre hay formas distintas de matizar o argumentar lo que uno piensa.
La Ley Sinde admite muchas interpretaciones y aquellos que la defienden esgrimen muchos argumentos para justificarla. Sin atreverme a afirmar que todos ellos son incorrectos, hay uno de ellos que considero especialmente falaz y me irrita en particular, y que veo últimamente demasiado a menudo: sin una ley como esta, y dejando el mundo de la creación en las crueles manos de "piratas" y otras gente de similar ralea, la cultura y la creación morirán irremediablemente. Es decir, nos quedaremos sin libros, sin música, sin películas y sin ningún otro producto de la creatividad humana, que, si hacemos caso a quienes así pronostican el Apocalipsis cultural, se encuentra inevitablemente condicionada a la consecución de algún tipo de recompensa o beneficio, a ser posible pecuniario.
Quienes nos pretenden convencer así no son, en mi opinión, verdaderos creadores, y nunca han sentido la verdadera necesidad de crear que lleva animando al ser humano a hacer avanzar las ciencias y las artes (cosas que vienen en realidad a ser una misma) desde el origen de los tiempos. Admito que un señor que escribe programas de ordenador o graba canciones quiera cobrar por cada copia de su obra que se distribuye. No comparto su opinión pero me parece lícito que así lo haga (aunque también me resulta difícil asimilar el agravio comparativo que supone para otras profesiones que no tienen adquirido ese dudoso derecho a cobrar varias veces un trabajo). Admito también que, ante el previsible declive de su negocio, reivindiquen su condición privilegiada en lo que a remuneración se refiere. Sin embargo, no admito que quieran hacernos creer que de no ser así vamos a perder cultura, porque, sencillamente, no es así. Basta mirar un poco la historia para darse cuenta de que es un argumento falaz. Y sobre todo, y esto es lo que más me irrita, es un argumento que desprestigia y mancha la figura del creador, y yo, como creador que soy, reivindico una imagen distinta de aquellos a los que nos gusta ejercitar nuestra creatividad, ya sea que esta produzca líneas de código, versos, imágenes, bustos de bronce o cualquier otra cosa.
Podría hablar de música o de literatura, por ser formas de creación que me gusta también practicar, pero siendo este un blog de SIG hablaré desde la perspectiva de un tipo de creador que parece que no se tiene demasiado en cuenta: el creador científico. Acabo de hacer pública la primer versión de mi libro libre sobre SIG, un proyecto en el que llevo trabajando ya unos cuantos años, y que es únicamente el fruto de mi afición por los SIG y por escribir acerca de ellos. El libro se distribuye bajo una licencia libre, y mi única intención al escribirlo ha sido disfrutar del hecho de hacerlo. Simplemente eso.
¿Me gustaría ganar mucho dinero vendiendo copias de mi libro de la forma habitual? Probablemente sí (aunque siendo realista es muy poco posible que eso suceda...) ¿Sería justo que yo recibiera algún tipo de compensación de cada persona que saque partido a mi libro, y que pudiera obligar a ello antes de conceder derecho para ese uso? Para algunos, probablemente sí. Para mí, sin embargo, no es ningún problema saber que alguien lo usa sin que yo reciba nada a cambio. En cualquier caso, lo que está claro es que el libro está ahí y ha sido creado sin ayuda de ningún tipo y sin que hayan de mediar otros intereses más allá del que la propia creación en sí comporta. Y, aunque esto suene ciertamente petulante (pido perdón por ello de antemano), creo, como profesional y buen conocedor del SIG que soy, que este libro contribuye a la cultura y al ámbito del SIG tanto como las obras de la mayor parte de esos autoproclamados "creadores" lo hacen a la música, el cine o la literatura. El acto de crear en sí, siempre y cuando no existan obstáculos que lo impidan y se dispongan los medios necesarios (no es lo mismo escribir un libro que hacer una escultura cuyos materiales han de pagarse), es lo que verdaderamente anima al auténtico creador.
Niels Henrik Abel gastó su dinero en publicar su más famoso artículo (el de la imposibilidad de resolver las ecuaciones de grado mayor que el quinto mediante radicales) porque creía en él y porque tal vez su pasión por la matemática era la de un verdadero creador y no la de un artistucho interesado. Lo que Abel necesitaba no eran royalties ni que se le pagara por cada científico que sacase partido a sus trabajo. Más bien, necesitaba que alguien hubiera invertido en darle un trabajo que le evitase tener que vivir en una pobreza que le llevo a morir de tuberculosis con solo 27 años. Es un caso un poco extremo, pero curiosamente esa ayuda a la investigación (es decir, a los creadores científicos) que a Abel le hubiese venido tan bien es la que este mismo gobierno que ahora nos quiere colar la Ley Sinde lleva recortando desde hace tiempo. Cuando toca poner dinero en lugar de recaudar, parece ser que los creadores ya no importan tanto.
Lo que vengo a decir es que la cultura y la creación van a seguir ahí pase lo que pase, lo cual no quiere decir que no se deban apoyar económicamente. Sin embargo, si se quiere de verdad potenciarlas, lo que se debe hacer es apoyar a los creadores para que lleven a cabo su labor creadora, de forma que no tengan que lidiar con otros problemas y puedan dedicarse a su arte plenamente. Y esto se consigue con un apoyo "antes" o "durante" la creación. Darles una forma para vivir del cuento una vez que han creado (es decir, "después" de crear) no es una buena manera de apoyarles y, sobre todo, deja fuera a una buena parte de creadores (entre ellos la inmensa mayoría de creadores científicos) que tienen también mucho que aportar.
Una última recomendación, para aquellos que quieran descubrir lo que la autentica pulsión creadora y científica quiere decir (y que probablemente no les vendría mal a muchos de los pro-Sinde): lean "Surely You're Joking, Mr. Feynman!: Adventures of a Curious Character", de Richard Feynman. Cuentan que Newton se metió una vez una aguja por un ojo para simplemente ver qué pasaba. La curiosidad y la inquietud investigadora de Feynman no tienen nada que envidiar a las de Newton, pero son algo menos espeluznantes y, sin duda, infinitamente más divertidas.
8:34
Stefano Costa: Pottery drawings and the semantic web
sur Planet OSGeo

It’s almost impossible to know how many potsherds have been drawn by archaeologists up to date. Their number is however no doubt well over one million (educated guesses welcome). However, when it turns to the standard question “How many of these drawings are on the web?”, there is going to be some disappointment. Especially if you don’t count Google Books, and in fact you should not — I’m going to explain why in a moment.

In 2010, most drawings are still done by hand on a piece of paper, but later it’s common to digitize these drawings using vector graphics software like Autodesk AutoCAD™, Adobe Illustrator™ or Inkscape.

read more

0:00
L’impact du voisinage géographique des pays dans l’attribution des votes au Concours Eurovision de la Chanson
sur Cybergeo

Le Concours Eurovision de la Chanson se tient tous les ans depuis 1956. L’originalité de ce concours réside dans le système d’attribution des points. Il n’y a pas de jury unique. Au contraire, chaque pays est invité à distribuer un nombre donné de points aux pays dont il a préféré les chansons. Au-delà de l’intérêt que présente ce système pour établir un classement collectif entre les pays, celui-ci fournit une importante base de données sur les échanges de points entre les pays et permet potentiellement de mettre en évidence les couples de pays {votant, compétiteur} dont les votes ne sont pas exclusivement motivés par la qualité des chansons. De fait, les médias couvrant l’événement évoquent fréquemment l’existence d’un biais dans la distribution des votes : selon eux, ce biais serait dû à la proximité géographique des pays et conduirait à la formation de blocs de pays voisins votant massivement les uns pour les autres. Dans cet article, nous proposons de vérifier la validité de cette assertion : en termes de réseaux sociaux, il s’agit d’évaluer l’influence de la proximité spatiale d’entités sur les relations qu’elles établissent. Pour cela, nous apportons plusieurs réponses méthodologiques. Dans un premier temps, nous analysons statistiquement les votes échangés au cours des éditions 1993-2008 et identifions les couples de pays {votant, compétiteur} dont les votes s’écartent significativement de la situation de référence (c’est-à-dire d’une attribution des points fondée uniquement sur la qualité des chansons). Puis nous confrontons le réseau social obtenu avec le réseau de voisinage des pays et, grâce à une méthode statistique adaptée, nous montrons que les “sur-votes” sont associés à des pays géographiquement proches. Enfin, par une analyse de clusters, nous mettons en évidence des blocs de pays qui sur-votent massivement les uns pour les autres. Nous montrons alors que ces blocs structurent fortement la distribution des votes anormalement élevés observés au cours de l’édition 2009. Cette méthode d’analyse conjointe d’un graphe social et d’un graphe géographique peut être généralisée à l’étude de phénomènes mettant en scène des relations entre des individus spatialisés.
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Lacoste Y., Lorot P., 2010, La géopolitique et le géographe. Entretiens avec Pascal Lorot, Paris, Choiseul Éditions, 268 p.
sur Cybergeo

Lacoste Y., Lorot P., 2010, La géopolitique et le géographe. Entretiens avec Pascal Lorot, Paris, Choiseul Éditions, 268 p.
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« T-Sphère » et médiance espace/étendue. L’antagoniste contradictoire et le concept de géoanthroposystème.
sur Cybergeo

L’article de 2009 [Reymond, 2009a] proposait à partir de la logique de S. Lupasco et de la néoténie de L. Bolk, un modèle géographique à charpente cybernétique transdisciplinaire. L’article présent, qui en est la suite, montre que la néoténie, concept dans lequel il n’est pas possible de s’installer encore tranquillement, peut être cependant à la racine d’Homo geographicus et des objets techniques qu’il crée ; en particulier, ces concentrations de populations que nous appelons villes.
L’article regroupe pour cela les concepts de sphère (P. Sloterdijk), d’énaction (F.J. Varela), de transduction (G. Simondon), de fractalité (B. Mandelbrot) qui ouvrent, en tiers inclus, une théorie géographique reliant l’antagonisme contradictoire à la médiance (A. Berque), espace/étendue (H. Reymond). Dans ce cadre, il utilise et admet, sans les examiner à fond, le paradigme de la complexité et la théorie des excédents de H. Reichholf ; et il suggère un développement en trois phases du phénomène d’urbanisation : écoanthroposystémique biosphériquement limitée ; antropogéosystémique économiquement débridée ; géoanthroposystémique écologiquement réfléchie. Cette lecture géohistorique du concept de géosystème aboutit à ouvrir une réflexion épistémologique sur la mise au point d’une géoanthropo-éthique.
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L’impact du voisinage géographique des pays dans l’attribution des votes au Concours Eurovision de la Chanson
sur Cybergeo

Le Concours Eurovision de la Chanson se tient tous les ans depuis 1956. L’originalité de ce concours réside dans le système d’attribution des points. Il n’y a pas de jury unique. Au contraire, chaque pays est invité à distribuer un nombre donné de points aux pays dont il a préféré les chansons. Au-delà de l’intérêt que présente ce système pour établir un classement collectif entre les pays, celui-ci fournit une importante base de données sur les échanges de points entre les pays et permet potentiellement de mettre en évidence les couples de pays {votant, compétiteur} dont les votes ne sont pas exclusivement motivés par la qualité des chansons. De fait, les médias couvrant l’événement évoquent fréquemment l’existence d’un biais dans la distribution des votes : selon eux, ce biais serait dû à la proximité géographique des pays et conduirait à la formation de blocs de pays voisins votant massivement les uns pour les autres. Dans cet article, nous proposons de vérifier la validité de cette assertion : en termes de réseaux sociaux, il s’agit d’évaluer l’influence de la proximité spatiale d’entités sur les relations qu’elles établissent. Pour cela, nous apportons plusieurs réponses méthodologiques. Dans un premier temps, nous analysons statistiquement les votes échangés au cours des éditions 1993-2008 et identifions les couples de pays {votant, compétiteur} dont les votes s’écartent significativement de la situation de référence (c’est-à-dire d’une attribution des points fondée uniquement sur la qualité des chansons). Puis nous confrontons le réseau social obtenu avec le réseau de voisinage des pays et, grâce à une méthode statistique adaptée, nous montrons que les “sur-votes” sont associés à des pays géographiquement proches. Enfin, par une analyse de clusters, nous mettons en évidence des blocs de pays qui sur-votent massivement les uns pour les autres. Nous montrons alors que ces blocs structurent fortement la distribution des votes anormalement élevés observés au cours de l’édition 2009. Cette méthode d’analyse conjointe d’un graphe social et d’un graphe géographique peut être généralisée à l’étude de phénomènes mettant en scène des relations entre des individus spatialisés.
0:00
Lacoste Y., Lorot P., 2010, La géopolitique et le géographe. Entretiens avec Pascal Lorot, Paris, Choiseul Éditions, 268 p.
sur Cybergeo

Géographie et géopolitique entretiennent des relations anciennes et conflictuelles. Friedrich Ratzel, fondateur de l’anthropogéographie (1882), est aussi le premier à utiliser le terme “géopolitique” (Geopolitik) dans un ouvrage intitulé Die Gesetze des raümlichen Wachstums der Staaten publié en 1896. “Les fondements de la croissance spatiale des États” : ce titre figure bien ce que sera la géopolitique allemande jusqu’à la Seconde Guerre mondiale. Cette vision géopolitique, relayée et développée par Karl Haushofer (1869-1946), contribuera à donner une justification doctrinale à l’annexion des Sudètes et à l’Anschluss. Cette naissance de la géopolitique marquée par l’impérialisme prussien puis par le national-socialisme explique en partie son exclusion des programmes de géographie après-guerre, aussi bien en France qu’en Allemagne.

La résurgence d’une approche géopolitique “à la française” est étroitement liée aux travaux d’Y. Lacoste et ces entretiens permettent de retracer quelques mo (...)

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