Archive for the ‘Servicios de Mapas’ Category

Descargas del CNIG. Open Source bien hecho!


Hola amigos del GIS,
Por motivos de trabajo que no vienen al caso, he tenido que bucear de manera sistemática la web de descargas del CNIG.
Una maravilla.


Por motivos que tampoco viene al caso, he de hacer esto mismo de vez en cuando en todos los Institutos cartográficos del mundo y el del CNIG es sin duda en el que me resulta más fácil, en el que el modelo de datos en más lógico y en el que los links son más fiables de todo el mundo. La única obligación es la atribución obligatoria de los datos. ¿No es mucho pedir, no? Desde el día 27 de diciembre, los datos del IGN son libres CC By 4.0.

Por tanto es obligatorio que mencione la procedencia a pie de imagen, créditos, etc.., sobre todo en publicaciones, usos comerciales, artículos, etc… (Por ejemplo puede poner “<tal dato> CC by instituto Geográfico Nacional” o más bien “derivado de <tal dato” CC by” o similares…).


Ya sea porque necesitemos las imágenes del PNOA (Plan Nacional de Ortofotografía Aérea), un modelo digital del terreno de alta resolución o imágenes históricas de nuestro pueblo… tan solo hay que bucear un poco en el catálogo de geodatos del Instituto Geográfico Nacional (Centro Nacional de Información Geográfica) y los conseguiremos.

Por ejemplo, la semana pasada tuve que encontrar datos sobre algunas ciudades españolas para hacer varios escenarios 3D para un cliente y aquí encontré por un lado un DSM 5m elaborado con fuentes LIDAR, por otro lado me bajé de Cartociudad los datos relativos a vectores lineales, manzanas y luego desde la web de CATASTRO ( me bajé las geometrías de todos los edificios de la ciudad (que planeo geoprocesar para eliminar las formas no deseadas y para adjudicar alturas precisas gracias al LIDAR bajado con anterioridad).

Por qué no añadir geometrías de Open Street Maps ( o de la propia Base Topográfica Nacional BTN25 para completar dicho escenario?


La verdad amigos es que desde que empezó a funcionar el Open Data, los Geógrafos y derivados tenemos mucho con lo que ‘jugar’ para hacer nuestros análisis.

Espero que os resulte interesante.

Un saludo cordial,

Geógrafo/ Máster SIG UAH/ Diseñador Multimedia


Taxing the sun?. Yes, in Spain this seems to be possible.


Absolutely ashamed by my government’s insane policies on this regards, Spain is now (…) attempting to scale back the use of solar panels – the use of which they have encouraged and subsidized over the last decade – by imposing a tax on those who use the panels. The intention is clearly to scare taxpayers into connecting to the grid in order to be taxed. The tax, however, will make it economically unfeasible for residents to produce their own energy: it will be cheaper to keep buying energy from current providers. And that is exactly the point. (…)



While we see anywhere else in the world this is being encouraged we don’t, we do exactly the opposite… but if you wonder why this could happen in a allegedly developed country like mine i herewith let you know the reason why… not to compete with other energies or more exactly other big companies providing that energy. A shame or even more than that, a fu***** shame.

So you encourage sustainability and now you discourage it?. In a country like Spain with such an incredible unemployment rate, which slowly reduces this figures at the expense of lower wages, winning competitiveness but losing anywhere else!!! (Mostly if we have cities with +3000 hours of sunshine a year!)

Anyway, trying not to get too upset after writing this words and also trying to make this makes sense in a GIS blog i will try to show you how Lon Angeles county in the US is encouraging the installation of solar panels, ranking all 2010 parcels according to wattHours per square meter. Isn’t it a politically and technically state of the art approach? Yes in my opinion it is, indeed.



Important Note.  The shapefile includes 4 fields that are summaries of the solar potential:

  1. Rank 1 – Square feet of roof receiving excellent solar input (> 1.4 million wattHours per square meter)
  2. Rank 2 – square feet of roof receiving good solar input (1.15 – 1.4 million wH/meter squared)
  3. Rank 3 – square feet of roof receiving poor solar input (950,000 – 1.15 million wH/meter squared)
  4. Rank 4 – square feet of roof receiving negligible solar input (< 950,000 million wH/meter squared)

Hope you like this post, if so, share it.

Kind Regards,

Alberto C.L.
MSc GIS and worried about “government insanity”.

Visualization will endure these difficult years of CRISIS!!


I have already worked as a building cleaner, data capture operator, copywriter, photographer, graphic designer, video editor, technical salesman… and seriously, I think i’m too old to make a living in something else now…

GIS has been working for me the last 8 years and i want to stay like this!!!:-) I have just read in GISLOUNGE that Visualization is among a list of a few things which will endure these difficult years of CRISIS.

(…) Visualization
Look at the Foursquare time machine for example. The classic cartography is being challenged to new methods.
The market wants more beautifully visualized maps. (…)

And if the market needs more beautifully visualized maps, Alberto will be there!!!!.



albertoconcejal (at)

Coverage map video over Bogotá, Colombia


A few months ago i prepared some scenarios over the city of Bogotá. Hope you guys like it.

Vulnérabilité de la population – Analyse SIG



An ancien analyse accompli il y a long temps mais toujours d’actualité. En espagnol.

119 countries have visited Geovisualization…SO FAR!!!!!


Ever tried Google Earth 3D Building Maker?


I started modelling 3D buildings quite a few years ago, I used to use 3D StudioMAX… After almost forgetting everything i knew about modelling, 3D and so on Sketch up was released by Google. In a few days i was not just making demos but working and producing!!! Its extremly easy!!!!. Now They have just released something called “Google Earth 3D Building Maker” and its amazing, theres no need to know anything about modelling, you just have to insert polygons and move vertexes…very intuitive indeed!.

place the number of polygons you need…move their vertexes to the proper position.

Directly upload it to your Google 3D warehouse…

And finally take a look at it inside Google Earth… that’s it!.

You can always use Sketchup to perfect it… but it’s good enough…a piece of cake!

Some of the buildings located in Madrid and Cape Town are mine!

Any questions?, please, don’t hesitate to contact me on:
albertoconcejal [at]

Alberto Concejal
3D GIS Technician

More of my 3D video edited scenarios.


Please, dont forget to turn on your speakers. Even if i first used a different score and Youtube’s elfs told me not to use it (because of copyright authoring) I have chosen this music from their stuff and this is what I finally got…

Hope you like it.
BA Geography
MSc GIS and Remote Sensing
GIS Technician and Multimedia Designer
albertoconcejal -at

One more 3D building. Avenida de la Vega 28108. Restaurante Asiático SHENG. Madrid, Spain.


I used to have lunch every thrusday there, at the ‘Restaurante Asiático SHENG’. I strongly recommend you ‘entremeses’ (In China you will find them as ‘dim-sum’) and Cantonese duck or Hong Kong duck (this was slightly spicy thou).  Very good food, very fast service and pretty cheap menu: 10,7 €… ideal for an IT worker!.


These views were rendered using ‘V-RAY’ for Sketch-up.



And now, Let’s go to Google Earth!



(I have modified my kml using a extruded placemark we talked about a few posts ago).
Now Let’s have our business in 3D!!!!!!!!!!!!!!!.
Hope you like it.
BA Geography
MSc GIS and Remote Sensing
GIS Technician
albertoconcejal -at

News: Lufthansa Realtime 3D Airtraffic


I have just read a very interesting item of news. WHITEVOID has just released a 3D visualization engine for monitoring more than 16.000  Lufthansa airplanes in realtime… amazing, isn’t it?.



You can navigate throughout the world in a 3D 14 meters screen (!) while you filter content and adjust size, speed and any other parameter…


In addition there’s a 3D audio system that helps you to be absolutely involved in the scenario… I’d love to handle one of those…


You can see a very interesting video here: