Xu ZHOU

Liaison Representative from PCGIAP to ISO/TC 211

National Geomatics Center of China

Contents

1. About PCGIAP

2. Why We Need Metadata?

3. Practice on Metadata

4. Recent Actions

1. About PCGIAP

Regional body for National Spatial Data Infrastructure (NSDI) integration

Operates under the UN Regional Cartographic Conference for Asia and the Pacific

Established in 1995

Executive board and working groups/taskforce

President: Mr. Peter Holland (Australia)

Vice president: Mr. Komaki Kazuo (Japan)

Secretariat: Mr. Li Weisen (China)

Members

Consists of 55 members in Asia and the Pacific Represented by Directorate of national survey and mapping organizations

Aim of PCGIAPTo maximize the economic, social and environmental benefits of geographic information by providing a forum for Asia and the Pacific to:

➢Cooperate in the development of a Regional Spatial Data Infrastructure (RSDI), “APSDI”

➢Contribute to the development of the Global Spatial Data Infrastructure (GSDI)

Display Detailed Metadata

Search for Suppliers, Data and

Services

2. Why We Need Metadata

6

8th PCGIAP meeting decided implement the prototype of

APSDI clearinghouse.

APSDI Clearinghouse is an environment that can facilitate access to geo-spatial data, products and services

Discover Resource Evaluate Resource Access Resource

7

APSDI Clearinghouse – ArchitectureAPSDI Clearinghouse consists of nodes, each clearinghouse node is composed of metadata of geo-spatial data and a software system for serving metadata

Datasets Metadata

Web Server

Catalog Server

Clearinghouse Node

Clearinghouse GatewayMetadata is one of the

key components

3. Practice on Metadata

Review

PCGIAP Metadata profile

Metadata Edit Tool

Prototype Implementation of APSDI Clearinghouse

ReviewDuring 7th PCGIAP Meeting, 2001-4,Tsukuba,Japana➢ A task force for APSDI data node was formed➢ Task: promoting the planning and implementation of APSDI

spatial data clearinghouse.➢ Started a pilot project

Before 8th PCGIAP Meeting, 2002-4,Brunei Darussalam➢ Workshop on APSDI Clearinghouse (Hainan Islands, China,

Nov. 2001);➢ PCGIAP Metadata profile drafted; ➢ Guidelines for APSDI Clearinghouse Node Development

drafted.

ReviewBefore 9th PCGIAP meeting, 2003-7,Okinawa, Japan

➢PCGIAP Metadata profile And a metadata entry tool named Mediator complying to this profile is developed and free available.

➢Guidelines for APSDI Clearinghouse Node Development finished and a reference prototype Implementation of APSDI Clearinghouse provided at http://nfgis.nsdi.gov.cn/apsdi

ReviewBefore 11th PCGIAP Meeting, 2005-5,Bali, Indonesia

➢ Joint Workshop of WG1 and WG2 ,7- 9 September 2004, Chengdu, China

➢Closed the pilot project and reinstituted the taskforce

➢ESRI GIS Portal Toolkit Workshop for PCGIAP, 6-8 April, 2005, Hong Kong, China

13 participants from 6 members (China, Indonesia, Japan, Korea, Nepal, Malaysia) attended

12th PCGIAP & 17th UNRCCAP, Tailand, 2006

Recommends PCGIAP encourage close collaboration between PCGIAP Working Group 2 with ISO/TC211 in the development of an ISO Metadata standard profile for Asia Pacific.

PCGIAP Metadata profile Fully derived from ISO/DIS 19115

core metadata elements. Strictly according to the rules for

creating a profile in ISO/DIS 19115 clause C6.

✓ No extension;✓ all mandatory metadata elements

in all mandatory sections;✓ all conditional metadata elements

in all mandatory sections, if the

dataset meets the condition;✓ all mandatory metadata elements

in all conditional sections, if the

dataset meets the condition;✓ all conditional metadata elements

in all conditional sections, if the

dataset meets the condition.

Metadata Packages

Metadata entity

set informationDistribution

information

Data quality

information

Identification

information

Reference system

information

Citation and responsible

party information

Extent

Information

PCGIAP Metadata profileNo. Title Definition Man./Opt.

Information about Metadata

1 Metadata point of contact MD_Metadata.contact > CI_ResponsibleParty M

2 Metadata date stamp MD_Metadata.dateStamp M

3 Metadata language MD_Metadata.language C

4 Metadata character set MD_Metadata.characterSet C

5 Metadata file identifier MD_Metadata.fileIdentifier O

6 Metadata standard name MD_Metadata.metadataStandardName O

7 Metadata standard version MD_Metadata.metadataStandardVersion O

Identification Information

8 Dataset title MD_Metadata > MD_Identification.citation > CI_Citation.title M

9 Abstract describing the dataset MD_Metadata > MD_Identification.abstract M

10 Dataset reference date MD_Metadata > MD_Identification.citation > CI_Citation > CI_Date.date and CI_Date.dateType M

11 Dataset language MD_Metadata > MD_DataIdentification.lauguage M

12 Dataset topic category MD_Metadata > MD_DataIdentification.topicCategory M

13 Dataset character set MD_Metadata > MD_DataIdentification.characterSet C

14 Geographic location of the dataset MD_Metadata > MD_DataIdentification.geographicBox or MD_DataIdentification.geographicIdentifier C

15 Dataset responsible party MD_Metadata > MD_Identification.pointOfContact > CI_ResponsibleParty O

16 Spatial resolution of the dataset MD_Metadata > MD_DataIdentification.spatialResolution > MD_Resolution.equivalentScale or

MD_Resolution.distance

O

17 Additional extent information MD_Metadata > MD_DataIdentification.extent > EX_Extent O

18 Spatial representation type MD_Metadata > MD_DataIdentification.spatialRepresentationType O

Distribution Information

19 Distribution format MD_Metadata > MD_Distribution > MD_Distributor > MD_Format.name and MD_Format.version O

20 On-line resource MD_Metadata > MD_Distribution > MD_DigitalTransferOption.onLine > CI_OnlineResource O

Data Quality Information

21 Lineage statement MD_Metadata > DQ_DataQuality > LI_Lineage.statement O

Reference System Information

22 Reference system MD_Metadata > MD_ReferenceSystem O

PCGIAP Metadata profileThey are enough to answer ”what, why when who, where and how” questions about geospatial data.

What - title and description of the data set.

Why - abstract detailing reasons for the data collection and its uses.

When - when the dataset was created and the update cycles if any.

Who - originator, data supplier, and possibly intended audience.

Where - the geographical extent based on latitude / longitude, co-ordinates, geographical names or administrative areas.

How - how it was built and how to access the data.

Metadata Edit Tool

Features: Use treeview to represent the relationship

between elements of different level in the hiberarchy structure.

Pop-up menu can be created dynamically according to the adopted schema

You can customize the interface, template, and even add new XML Schema to enable this software to create other XML file according to the specified XML Schema.

A lot of short cuts, pop-up menu enable you edit your document freely.

Used to capture metadata complying to the profile

Metadata Edit Tool

Prototype Implementation of APSDI Clearinghouse

http://nfgis.nsdi.gov.cn/apsdi

4. Recent Actions13th PCGIAP Meeting, June 2007 Seoul, KoreaMetadata profile for AP TaskforceCoordinator: Prof. Sang-Ki Hong, Vice Chair of WG2

➢ Use what has already been done by PCGIAP in the past➢ Select latest ISO standards as the basis for this exercise➢ Look at the profile already developed by the UN (UNGIWG)➢ Connect the PCGIAP process with the one started by CODI

and eventually PCIDEA➢ Create a draft profile to be discussed among the members of

PCGIAP➢ Look at tools that could support the use of this profile➢ Provide information and material to the members through

the WG 2 web site➢ Increase awareness through the organization of at least one

workshop on metadata in the region➢ Address the language issue (e.g.: glossary of terms, ISO)

Tasks Include:

Thanks