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“Cataloguing, Processing and Downloading heterogeneous geodata on the Internet” by Andrea Musone

5 th EC-GIS Workshop, “ GIS OF TOMORROW ” Stresa, Italy 28-30 June 1999 __________________________________________________________________. “Cataloguing, Processing and Downloading heterogeneous geodata on the Internet” by Andrea Musone

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“Cataloguing, Processing and Downloading heterogeneous geodata on the Internet” by Andrea Musone

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  1. 5th EC-GIS Workshop, “GIS OF TOMORROW”Stresa, Italy28-30 June 1999__________________________________________________________________ “Cataloguing, Processing and Downloading heterogeneous geodata on the Internet” by Andrea Musone c/o Intecs Sistemi SpA, via L. Gereschi, 32 - 56127 Pisa (Italy) Tel. +39 050 545111, fax: +39 050 545200 http://www.pisa.intecs.it, andream@pisa.intecs.it Paper and slides online at http://www.pisa.intecs.it/~andream - 1 -

  2. 5th EC-GIS Workshop, “GIS OF TOMORROW”Stresa, Italy28-30 June 1999__________________________________________________________________ INTECS SISTEMI SpA The Company: ISO 9000-certified SME; Where: Pisa (I), Rome (I), Piombino (I), Naples (I), Tolouse (F); How many: 170 people (90% graduated); Business: Space, Defense, Civilian, Research; What: Software Engineering, Real-Time Software, Space On-Board & Ground Software, Distributed Multimedia Information Systems; To know more: http://www.intecs.itorhttp://www.pisa.intecs.it/ - 2 -

  3. 5th EC-GIS Workshop, “GIS OF TOMORROW”Stresa, Italy28-30 June 199___________________________________________________________________ Scenario GIS Applications: • multiple domains (agriculture, transports, geology, etc.); • proprietary (e.g. based on commercial GISs); • working on a variety of geodata formats; • interoperable through geodata export/import; Geodata conversion: costly and complex. - 3 -

  4. 5th EC-GIS Workshop, “GIS OF TOMORROW”Stresa, Italy28-30 June 199___________________________________________________________________ Recovery initiatives • Political: GSDI, NSDI, EGII (GI2000), etc.; • Technological: open formats, but mainly open APIs; • OGC (Open GIS Consortium®); However the interoperability through geodata exchange will survive for a while. - 4 -

  5. 5th EC-GIS Workshop, “GIS OF TOMORROW”Stresa, Italy28-30 June 199___________________________________________________________________ Requirements User needs: • locate the data; • determine (with metadata) if data meet own needs; • request data processing (e.g. filter, project, clip); • transfer and import data onto own GIS applications; Organizational needs: • cataloguing data (with metadata); • making metadata and data available on the network; • setting a legal framework for sharing data (and costs); - 5 -

  6. 5th EC-GIS Workshop, “GIS OF TOMORROW”Stresa, Italy28-30 June 199___________________________________________________________________ GIS Broker: “bridge” from Metadata to Data Client/Server architecture for cataloguing, processing and downloading heterogeneuous geodata on the Internet. Inner view: • proprietary Client (ArcView®) LAN catalogue; • Web Client WAN catalogue server (Informix®); • ASCII metadata import/export (keyword-value pairs); • “open” Geodata Server (ArcInfo®, O2®, others); - 6 -

  7. 5th EC-GIS Workshop, “GIS OF TOMORROW”Stresa, Italy28-30 June 199___________________________________________________________________ - 7 -

  8. 5th EC-GIS Workshop, “GIS OF TOMORROW”Stresa, Italy28-30 June 199___________________________________________________________________ Client functions (on metadata): • attribute search (e.g. date > 01/01/94, type=“vector”); • spatial search by gazetter (e.g. within “Tuscany”); • spatial search by Area Of Interest (AOI); • spatial search by computed AOI; • show attributes (e.g. CEN/TC 287); • show browse graphic; • show spatial domain (footprint); - 8 -

  9. Client generic query retrieved geodata WAN Geodata Server specific query specific query Transformer Transformer Transformer ArcInfo O2 5th EC-GIS Workshop, “GIS OF TOMORROW”Stresa, Italy28-30 June 199___________________________________________________________________ Geodata retrieval options: • geographical objects (default: all); • attributes (default: all); • attribute values (default: no filter); • export format (default: source); • datum/projection (default: source); • clip area (default: full extent);  notification of geodata URL - 9 -

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  11. 5th EC-GIS Workshop, “GIS OF TOMORROW”Stresa, Italy28-30 June 199___________________________________________________________________ Funding: • ESPRIT project GEO2DIS (8017, EC DGIII); • Telematics project GeoMed (2037, EC DGXIII); • GIS-HighWays (IMI), indirectly; • MUIS (ESA/ESRIN), indirectly; Next future: • tackle the CEN/TC 287 - ISO/TC 211 dilemma; • metadata interoperability (e.g. UML/XML); • towards an unified infrastructure (e.g. with ESA services); • exploit the interoperable GISs (when available); - 11 -

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