Xu ZHOULiaison Representative from PCGIAP to

ISO/TC 211National Geomatics Center of China

Contents

1.About PCGIAP2.Why We Need Metadata?3.Practice on Metadata4.Recent Actions

1. About PCGIAPRegional 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 PCGIAP To 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 formedTask: 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, China13 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 information

Distribution 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)

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