XVIIIth Congress: XVIIIth Congress

Kraus, Karl; Waldhäusl, Peter

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Multivolume work

Persistent identifier:: 1667435949

Title:: XVIIIth Congress

Sub title:: Vienna, Austria 1996

Year of publication:: 1996

Place of publication:: Vienna

Publisher of the original:: Austrian Society of Surveying and Geoinformation

Identifier (digital):: 1667435949

Language:: English

Editor:: Kraus, Karl; Waldhäusl, Peter

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing

Document type:: Multivolume work

Volume

Persistent identifier:: 1667438379

Title:: XVIIIth Congress

Scope:: 449 Seiten

Year of publication:: 1996

Place of publication:: Vienna

Publisher of the original:: Austrian Society of Surveying and Geoinformation

Identifier (digital):: 1667438379

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(31,B2)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist anhand des Copyrightjahrs ermittelt.

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Kraus, Karl; Waldhäusl, Peter

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: METADATA REQUIREMENT FOR GIS: A CANADIAN EXPERIENCE Gordon Plunkett

Document type:: Multivolume work

Structure type:: Chapter

sion of w/GIS spatial riendly in the are is etwork IS and ct data € must ind the queries play. ALRIS) based Utility MLRIS locate r has a , and a CGSB spatial minate r to be letwork single lenance Remote oss the her an such as n query Canada . CGSB letwork he MD | Earth s using ed with 4.2.1 UNEP GRID UNEP plans to develop a version of “One-Stop Shopping” for environmental information via the World Wide Web. The UNEPNet concept will include the use of metadata and metadata browser software tools developed among the network of UNEP GRID centres. The Grid Metadata directory [MCKEO1], both data and software will be disseminated publicly according to the facilities available to the different users. For those with Internet access, the service will be provided on the World Wide Web through links such as URL, by Telnet or by Email. Other users will be served by self- contained software and reference data that will be provided on request for PCs or workstations. The UNEP metadata directory will serve as a library card catalogue of environmental information. It will contain “card entries” (or metadata descriptions) of institutes and data sets. Similar to the library card catalogue, the metadata directory will allow users to search for environmental information by institute name or data set (title), contact person (author), theme, keyword and location (subject), as well as other criteria. The UNEP metadata directory is a PC reference system that provides environmental information to users via a user-friendly interface. The tool is designed to allow simple data entry (there are only ten mandatory fields for an institute entry or a dataset entry), uncomplicated data queries and easy data exchange between any organizations that use a basic international metadata standard, such as the CEOS Directory Interchange Format (DIF). 4.2.2 Spatial FreeWAIS The US Geological Survey has developed a software tool called Spatial FreeWAIS [NEBE01], for the indexing, querying and retrieval of information in WAIS using spatial and free-text constructs. Some enhancements were made to the software in Germany and the software was made to conform the US FGDC Metadata standard. Spatial queries are made using Boolean type operators to select information within a bounding rectangle. With the requirement for spatial data producers to also provide a standard descriptive metadata outline of their data, the availability of the metadata for the metadata database will provide the users with a substantial database from which to select information. This development is using the WWW tools for access to the various metadata sets and thus a single user should have access to a large number of metadata entries. 42.3 GeoWeb project The State University of New York at Buffalo has developed software tools under the GeoWeb project [PLEWO1] in order to implement a working prototype of the data clearinghouse concept. The project describes the four elements of the clearinghouse initiative. These elements include: the spatial data, the metadata, the metadata index and the search interface. This search interface allows the user to enter queries in a number of fashions, from direct entry to pointing to an area of interest. 313 The desire to have an open interface system and to have remote access, motivated the project to make the World Wide Web as the implementing technology for the metadata browser. The desire is also to have the browser access all on- line metadata databases as if they were one massive database. In addition the user interface will have a number of different metaphors for querying including map based spatial queries, place name queries or keyword search. The concept of using the Internet allows the user to operate the query engine on a computer that has only links to external metadata databases. 5. SUMMARY There appears to be no single body responsible for the international coordination of either metadata or metadata search engines. There are a number of localized efforts, but little progress has been made in the area of interoperability. Perhaps the best method of obtaining some coordination on the metadata standardization front is through ISO/TC 211. This is an internationally accredited body that develops standards that are recognized in many countries around the world. There is probably no need to standardize on the search or query engine. These simply only need to communicate via the network in some ordered fashion. There will likely be some requirement for local differences or language changes. In summary, there are a number of different efforts ongoing in Canada and throughout the world. There are several good metadata standards and perhaps there are possibilities of harmonizing these in the future years. Canada, the US and UNEP among others have selected and adopted standards for metadata. The trick will be to coordinate the development of these standards to allow for the harmonization of these databases over the upcoming years. 6. ACKNOWLEDGMENTS The author would like to thank the following people for their input to the paper generally through personal communication: James Mckenna, United Nations Environment Programme; Valerie Hume, Department of Indian Affairs and Northern Development; and Roger Tomlinson, Tomlinson and Associates. 7. BIBLIOGRAPHY [CGSB01] Canadian General Standards Board; "Directory Information Describing Digital Geo-Referenced Data Sets"; Document No C**/CGSB-171.3; CGSB, Ottawa, Canada, K1A 1G6. [EFFA01] Samual Effah, Cherian Chaly and Wenjing Zhu; "MetaView/GIS: The GIS Spatial Data Browser, Its Design, Implementation and Operation"; Proceedings of the ISPRS, Commission II Symposium, June 6-10, 1994, International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B2. Vienna 1996

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