Archiv für den Tag: 7. April 2013


GIS Tools for Apache Hadoop

GIS Tools for Hadoop is an open source toolkit intended for Big Spatial Data Analytics. The toolkit provides different libraries:

  • Esri Geometry API for Java: A generic geometry library, can be used to extend Hadoop core with vector geometry types and operations, and enables developers to build MapReduce applications for spatial data.
  • Spatial Framework for Hadoop: Extends Hive and is based on the Esri Geometry API, to enable Hive Query Language users to leverage a set of analytical functions and geometry types. In addition to some utilities for JSON used in ArcGIS.
  • Geoprocessing Tools for Hadoop: Contains a set of ready to use ArcGIS Geoprocessing tools, based on the Esri Geometry API and Spatial Framework for Hadoop. Developers can download the source code of the tools and customize it; they can also create new tools and contribute it to the open source project. Through these tools ArcGIS users can move their spatial data and execute a pre-defined workflow inside Hadoop.
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    Erste vollständige Himmelskarte

    Während ich einen intessanten und detaillierten Podcast zur Himmelsscheibe von Nebra angehört habe, habe ich nach anderen Himmelskarten gesucht und bin auf eine Visualisierung der Big Bang Theory gestoßen:

    Die ESA meldet am 21.03.2013 von einer Karte, in der die Mikrowellen des Urknalls aufgezeichnet und visualisiert werden konnten:

    „Acquired by ESA’s Planck space telescope, the most detailed map ever created of the cosmic microwave background – the relic radiation from the Big Bang – was released today revealing the existence of features that challenge the foundations of our current understanding of the Universe.>>   weiterlesen