Following my DBpedia Europe Countries post… DBpedia World! Bigger and lovely!.
Maps
Click for full zoomed version!
DBpedia 3.7 World points
DBpedia Live World Points as of july 2012
Category Archives: Maps
Qgis – Color to layer attribute
Recently I was working with some data layers in QuantumGIS, playing to decide the proper color combination for my visualization. The result had to be presented in a web environment using OpenLayers.
The point is. I define and check the visualization in Qgis, and then I want to export the results to be served as a OpenLayers Vectorlayer, or as a Mapserver layer. Of course, with the color defined in Qgis.
Openlayers and Mapserver give the option to read the color from an attribute value (here and here). Maybe there is an easier way, but in this case I developed a small plugin to export the current visualized color into a specific layer attribute.
Screenshots
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- Color to Attribute – Icon in Qgis main screen
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- Main window of the plugin. Select layer and attribute
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- Creating a new attribute to fill with the color value
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- Feature list after adding the new attribute
Europe Countries – DbPedia+SPARQL+Python
Introduction
DBpedia is a project that aims to extract structured information from Wikipedia. They generate RDF information that can be queried in different ways, one of this is using the SPARQL query language.
In this post I’ll show how to query Dbpedia using a python SPARQL wrapper to obtain all the Wikipedia points of places in Europe. The post explains it step by step, you can fork the code at my github.
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NOTE from the future:
the original code was Europe.py. The closest actual code would be alldbpediapoints.py
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Results
The result will look something like this:
DBpedia Europe Points
Emerillon: Geocoding Names
Current search bar on emerillon is limited:
Current Emerillon Search with GeoNames
I want emerillon to find also streets!
Emerillon search with GeoNames and OSM
And in this post I explain how I’ve done it
Filed under code, emerillon, gis, Maps, webservices
Shackleton – Imperial Trans-Antarctic Expedition Map
Recently I’ve been reading Endurance: Shackleton’s Incredible Voyage. On the whole book they describe its current position, movement, etc.. but it’s difficult for me to understand certain positions on the poles. Also, the history is so astonishing that it deserved a cool map.
There are some maps of the Imperial Trans-Antartcic Expedition: http://www.kodak.com, http://www.wgbh.org, coolAntarctica, and a long etcetera. But I wanted to play a little bit.
Results
Online Map:
Nice view of Shackleton Imperial Trans-Antartcic expedition. Information of each point and also photos.
Interactive Shackleton Map at MapBox
Filed under Maps
Playing With TileMill
For Module8, at ITC we have been learning about MapServer and OpenLayers. In my case, I also been playing with TileMill. Here I explain all the steps needed to create a small map with tilemill.
Filed under Maps
Castells 