Category Archives: sdi

Parameter standardization for SQL fed queries through WMS/WFS?

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Web map services are not straightforward any more. Some are based on complex queries to database like Oracle, MSSQL and PostGIS. This makes it possible for the services to provide highly specialized data views to their clients. Sometimes this is done by having the web map service accepting or forwarding non-standardized parameters. It’s beautiful and confusing at the same time.

My major problem with this practice is not that it is being done, but the lack of standardizations of parameters. I frankly think this is a problem and I am foreseeing it becoming more so as time goes by without any action taken. Continue reading →

Timor Leste – environmental data review workshop

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The 6th of March as part of the Norwegian Petroleum Assistance Program together with DNMA I contributed to a workshop to be held at the Arbiru Hotel in Dili, Timor Leste. The intended outcome was to contribute to a process for establishing better handling of environmental data. The workshop was opened by his Excellency Sr. Abilio de Deus de Jesus Lima, State Secretary for the Environment. Continue reading →

Environmental Spatial Data Infrastructure – technology

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Maubissie in Timor-LesteEstablishing the basics for handling environmental spatial data relies on proper organization of the data into repositories where it is stored and prepared for dissemination. This article points to how such a structure could be made using geoserver, geonetwork, WordPress, Geonode, Postgis and Linux. All modules has been chosen because of being open source. As a consequence this constellation is an excellent starting point for establishing thematic data infrastructures in developing countries. As it is, the infrastructure below would not be possible without the support of contributors like the WorldBank and OpenGeo.

Will the suggested infrastructure can do the job. And if it does, how is it used by the human/organisational part of the equation? The answers to latter are beyond the scope of this article. This time I will try to answer the first question – and thus look at the technical sides of it. Continue reading →