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Australian Spatial Data Directory (ASDD)

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Modified: 2009-12-07
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Quarterly Technical Report

July to September 2008


Introduction

At the end of September 2008, there were 22 repositories within the ASDD with a total of 32,207 dataset descriptions available for searching. However, the Australian Antarctic Data Centre and WALIS ASDD nodes were down at that time. Statistics are provided for the ASDD covering:

  • web access statistics,
  • gateway statistics,
  • number of records at each repository,
  • reliability of repository,

for the months of July, August and September 2008.

Repositories which have provided descriptions are also listed.

Achievements during past quarter

  • There are less basic and less advanced searches this quarter than last quarter.
  • There are more visitors and less accesses to the ASDD this quarter than last quarter.
  • Some Z39.50 search errors may be caused by poor metadata content. Some metadata discrepancies are highlighted in the advanced results report. Node managers are encouraged to review this report regularly.
  • Congratulations to: Australian Hydrographic Office - Product Metadata, Australian Hydrographic Office - Publication Metadata, Australian Hydrographic Office - Source Metadata, Bureau of Meteorology, Geoscience Australia and Queensland Department of Natural Resources and Water Data for having valid ANZLIC Version 2 metadata.
  • Congratulations to: Geoscience Australia for being available 100% of the time during this quarter.
  • The Australian Antarctic Data Centre ASDD node was unavailable for all of this quarter.
  • The WALIS nodes were not available for this quarter.
  • Due to circumstances beyond Geoscience Australia's control the ASDD gateways were unavailable from
    • 2008-07-13T05:30 till 2008-07-13T06:30,
    • 2008-09-19T16:30 till 2008-09-21T12:30,
    This represents 45 hours of the whole quarter which is 2.0% of the total time.

Web Statistics for ASDD

This quarter's statistics for the ASDD are available for the period 2008-04-01 to 2008-06-30.

A summary of this quarter's statistics follows:

This Quarter Last Quarter
Spider page views (These values are excluded from the other web statistics.) 164,606 = 51% of all page hits 131,327 = 44% of all page hits.
Total page views (Access of a page as a whole e.g. html): 156,714 165,909
Total visitors: 10,357 9,233
Starting day: 1st July 2008 2008-04-01
Ending day: 30th September 2008 2008-06-30
Total days covered: 92 91
Average page views per day: 1,703 1,823
Average visitors per day: 113 101

Notes:

  • There are less page views and more visitors this quarter than last quarter.

The following diagrams show the statistical trends for the last four years:
Total page views per quarter
Average page views per day per quarter
Total visitors per quarter
Average visitors per day per quarter

More statistical details are available for:

Gateway Usage

The following statistics are a summary of the ASDD basic and ASDD advanced gateways:

ASDD Basic Gateway

  • 29381 searches were made through the ASDD basic gateway.
  • 1710 single search terms were used.
  • 27671 multiple search terms were used.

The following links provide more details on the monthly basic gateway statistics:

ASDD Advanced Gateway

  • 3443 searches were made through the ASDD advanced gateway.
  • 935 single search terms were used.
  • 2508 multiple search terms were used.

The following links provide more details on the monthly advanced gateway statistics:

Repository Records

The following table lists the repositories, the DTD used, the number of records parsed per repository and the number of XML records that validated some time during July 2008.

Note:

  • The content of the ANZMETA-1.3 metadata records were validated using the RELAXNG schema.
  • These results take a long time to generate and May show different numbers to those of the monthly accesses. This could be due to nodes adding metadata to their repositories, some repositories not properly responding to the Z39.50 queries or not having records available in XML format.
  • 95% of the ASDD records were available in XML format for validation. This is less than last quarter.
  • 83% of XML records that were parsed are valid. This is more than the last quarter.
  • 6 repositories have 100% valid ANZLIC Version 2 metadata records, which is more than last quarter.
  • 17 repositories are using or partially using ANZMETA-1.3.DTD or its extension, which is the same as last quarter.
  • Eight ASDD nodes were not available for checking.
  • "Not available" means that the server did not respond appropriately to the query at the time of investigation.

Repository Number of records available Number of records parsed Records that validate ANZMETA DTD Comments
ACT Geographic Data Directory 423 423 418 1.3 There are content problems with keywords.
Australian Antarctic Data Centre - - Not available Not available Not available
Australian Hydrographic Office - Product Metadata 1143 1143 1143 1.3
Australian Hydrographic Office - Publication Metadata 2 2 2 1.3
Australian Hydrographic Office - Source Metadata 4985 4985 4985 1.3
BRS and Australian Natural Resources Data Library (ANRDL) 1079 1079 0 Not available Can't resolve XML elements.
Bureau of Meteorology 1 1 1 1.3
CSIRO Marine and Atmospheric Research 2373 2373 2279 1.3 There are content problems.
DEWHA Discover Information Geographically (DIG) 925 925 873 1.3 There are content problems with the unique id, dates and non-UTF-8 characters.
Geoscience Australia 712 712 712 1.3
IndexGeo Pty Ltd - Eco Companion catalogue 11 11 5 1.3 and -//IndexGeo//DTD ANZMETA Resource 1.1//EN Invalid attributes and keywords.
Murray-Darling Basin Commission 221 221 94 1.3 No document type declaration.
National Oceans Office 902 902 860 1.3 There are content problems.
NSW Natural Resources Data Directory 5170 5170 5056 1.3 extension -//NSW NRIMS//DTD ANZMETA NSW NRIMS Page 1 v1.0//EN and unknown DOCTYPES There are content problems and unknow DOCTYPE.
NT Spatial Data Directory 487 487 0 No DOCTYPE provided no document type declaration.
Other Commonwealth Data (hosted by BRS) 59 59 0 Not available Can't resolve XML elements.
PSMA Australia Limited 6 6 6 1.1 Convert to ANZMETA-1.3.dtd.
Qld Spatial Data (QSIC) 1530 1530 307 1.3, -//ANZLIC//DTD QSIIS 1.3//EN and -//QSIIS//DTD QSIIS 1.3//EN Need to validate XML records.
Queensland Department of Natural Resources and Water Data 8052 8052 8052 1.3 and -//QSIIS//DTD QSIIS 1.3//EN
RAN Directorate of Oceanography and Meteorology 1897 1897 0 1.3 There are content problems.
South Australian Spatial Information Directory 778 248 185 1.3 and 1.1 Convert all to ANZMETA-1.3.DTD. Some files are not XML documents. There are content problems.
Tasmanian Spatial Data Directory 365 365 361 1.1 Convert to ANZMETA-1.3.dtd. There are content problems.
Victorian Spatial Data Directory 1086 1086 30 1.3 There are content problems.
WALIS Interragator-Aerial Photography - - Not available Not available Not available
WALIS Interragator-Bibliographic - - Not available Not available Not available
WALIS Interragator-Environmental Impact Statements - - Not available Not available Not available
WALIS Interragator-Natural Resource Monitoring - - Not available Not available Not available
WALIS Interragator-Spatial Data - - Not available Not available Not available
TOTAL 32207 30539 25369 -

Repository Reliability

A summary of repository reliability for the period July to September 2008 is given below:

Repository Up time July % August % September %
ACT Geographic Data Directory 100 99 99
Australian Antarctic Data Centre - - -
Australian Hydrographic Office - Product Metadata 99 99 99
Australian Hydrographic Office - Service - Publication Metadata 99 99 99
Australian Hydrographic Office - Source Metadata 99 100 99
BRS and Australian Natural Resources Data Library (ANRDL) 99 99 99
Bureau of Meteorology 99 99 100
CSIRO Marine and Atmospheric Research 99 99 99
DEWHA Discover Information Geographically (DIG) 98 99 100
Geoscience Australia 100 100 100
IndexGeo Pty Ltd - Eco Companion catalogue 99 99 99
Murray-Darling Basin Commission 99 94 58
National Oceans Office 100 99 99
NSW Natural Resources Data Directory 99 100 100
NT Spatial Data Directory 100 98 98
Other Commonwealth Data (hosted by BRS) 100 99 100
PSMA Australia Limited 100 99 99
Qld Spatial Data (QSIC) 99 100 95
Queensland Department of Natural Resources and Water Data 100 100 99
RAN Directorate of Oceanography and Meteorology 73 86 86
South Australian Spatial Information Directory 100 98 99
Tasmanian Spatial Data Directory 100 98 99
Victorian Spatial Data Directory 89 99 99
WALIS Interragator-Aerial Photography - - -
WALIS Interragator-Bibliographic - - -
WALIS Interragator-Environmental Impact Statements - - -
WALIS Interragator-Natural Resource Monitoring - - -
WALIS Interragator-Spatial Data - - -
Average 98 98 97

Monthly details about the server, port, database, available records query time and repository availability can be found at:

July
August
September

Repository managers are automatically notified by email if a server goes down for a period longer than four hours.

Repository descriptions

ASDD repository descriptions http://asdd.ga.gov.au/asdd/tech/node/

It is the responsibility of each repository manager to utilise the online document management application to describe their repository and update the repository description whenever they choose.

The following ASDD repositories are briefly described and include references to further information ...

  • ACT Geographic Data Directory
  • Australian Antarctic Data Centre
  • Australian Hydrographic Office - Product Metadata
  • Australian Hydrographic Office - Publication Metadata
  • Australian Hydrographic Office - Source Metadata
  • BRS and Australian Natural Resources Data Library (ANRDL)
  • Bureau of Meteorology
  • CSIRO Marine and Atmospheric Research
  • DEWHA Discover Information Geographically (DIG)
  • Geoscience Australia
  • IndexGeo Pty Ltd - Eco Companion catalogue
  • Murray-Darling Basin Commission
  • National Oceans Office
  • NSW Natural Resources Data Directory
  • NT Spatial Data Directory
  • Other Commonwealth Agencies (hosted by BRS)
  • PSMA Australia Limited
  • Qld Spatial Data (QSIC)
  • Queensland Department of Natural Resources and Water Data
  • RAN Directorate of Oceanography and Meteorology
  • South Australian Spatial Information Directory
  • Tasmanian Spatial Data Directory
  • Victorian Spatial Data Directory
  • WALIS Interragator-Aerial photography
  • WALIS Interragator-Bibliographic Data
  • WALIS Interragator-Environmental Impact Statements
  • WALIS Interragator-Natural Resource Monitoring
  • WALIS Interragator-Spatial Data