Jay-joon Yoon, Chea-seung Kim, Ik-hoi Kim

Introduction to GeoNetKorea

GeoNetKorea is the stage where GIS information is commonly used through the modification of Geography Network of Esri whose purpose or intention is to be suitable for Korean environment.  Spatial data and map service shall be provided by utilizing the merit of ArcIMS and using the internet network.
Its major services are Framework DB, DSP(Data Service Provider), ASP(ArcIMS Service Provider), and Solution and so on. Framework DB, which is the basic spatial data covering over all the South Korea presents the strategy of building the layer and it’s utilizing plans.  DSP is for the introduction on collection of members and metadata, and ASP presents the collection of members and their activities.  Solution, a kind of map service, provides the services such as guiding the demanded location, location of TOTO shops, location of Homestaykorea’s host.  We hereby introduce our future plans to do with telling the difference from Geography Network.

Introduction

· Background and goal 

CADLAND, the best GIS Solution provider in Korea, has 2,077 clients in the variety of fields such as government agencies, companies and institutes.  Currently, our clients utilize GIS application systems in the variety of fields, and the spatial data, the base to the system, is based on the layers of variety of map scales. 
Importance of spatial data is increased with the extensive development of GIS application system, but overlapping investments have been made, as the information on building status of each spatial data is not shared.  In addition to it, numbers of application fields of GIS are not shared in terms of technology.
As previously stated, GeoNetKorea was planned for the common use of spatial data and GIS technology. As described on the following [figure-1], it is planned and designed to share the GIS information to users and providers.

   
[Figure-1] Conceptual diagram of business model

Service User shall be the regular member using the simple map service or the one who is interested in GIS.  The regular member may use the variety of services such as information on the spatial data, map service and internet GIS Solution and so on. The provider is the membership organization or a person that provides the user with internet GIS Service in the forms of B2B or B2C after enrollment as member of GeoNetKorea.

· Strategies and target business

For providing the stage of common use of GIS information, GeoNetKorea focuses on using numbers of extension layers based on Framework DB, and all the spatial data shall be applied to map service based on the locations information after preprocessing.  

[Figure-2] Building strategies of framework DB and applications

The major undergoing tasks are the production and distribution of Framework DB, acquisition of extension layers that are developed in company or through outsourcing by the membership of DSP, map service by ASP membership, and development of internet GIS Solution that are combined by DSP and ASP. Process of all the businesses or projects are made based on the following GeoNetkorea homepage.  In the future, this site shall be improved as the one providing the common use of information on GIS with connecting spatial data provider and purchaser, developer of map service and common netizens in domestic or foreign countries.

[Figure-3] GeoNetkorea((http://www.GeoNetKorea.com) Homepage

· History and implementation

• History
      - 2000.   8 : Submit a paper for Business Model Patent
      - 2000.   10 : Homepage of GeoNetKorea was initially developed
      - 2001.   7 : Extension DB acquisition strategy based on Framework DB was established
      - 2001.   10 : Homepage of GeoNetKorea are upgraded

• Implementation
     - 2001.   5 : Map service for locating the place was developed
      - 2001.   7 : Framework DB for transportation and logistics are accomplished
      - 2001.   9 : GeoDataKorea framework DB is building
      - 2001.   12 : Map service for locating TOTO shops was developed
      - 2002.   4 : Demographic and spatial data in English extension was established
      - 2002.   4 : Locating map service for Homestaykorea Host in English was initially provided

Framework DB

· Building strategies  

Framework DB is the spatial data that is basic to all the GIS Application solutions and intended for covering all over the South Korea.  Projection origin was adjusted to allow all the places in South Korea to be a positive and continuous spatial data.  Overlapping the boarder lines of the roads and streets as the basic unit for revising all the layers maximizes the effectiveness in using and maintenance of all spatial data.

[Figure-4] Building strategies of Framework DB and Extension DB

The GeoDataKorea Framework DB is the spatial data whose scale is 1:5,000 based on national GIS (NGIS) basic data.  Long-term big investment is required for building this spatial data, so we proceed with this project with our business partner.
Extension DB is the layers with scaleable and projective that are available to be overlapped with the ones for Framework DB. Commercial layers which are produced by GeoNetKroea or external DSP members and variety of layers provided by DSP Members are available to use, and if variety of Extension DB and Framework DB are overlapped, their effectiveness shall be maximized.

· Database contents

For the details of layers for GeoDataKorea, refer to the following [Table-1], and it consists of 11 layers and about 50 themes.  ED field is available for all the themes, and building method and history are managed by the code.  For example, for the purpose of national security some area not took the aerial photograph. In this case, paper map is used and management of history is needed for this area.
CNS(Car Navigation System) retains Framework DB providing the logical transportation information with the structure of link-node as the DSP member.

[Table-1] GeoDataKorea Framework DB

Acquisition methods of Extension DB are Frame Data, Private Data and Public Data.  Frame Data is the commercial layers that is closely related to Framework DB and is the Extension DB to be produced by us.  Network, Statistics, and Annotation in English are available. Private Data is on the variety of themes such as mountain climbing, hook, surface and off-road those are handled by the company or agency specialized in producing the spatial data.  The Public Data is the themes on geology, soil, land use, climatic, and hydrography, which are retained by the government agencies.  For the details of extension DB, refer to the following [Table-2].

 [Table-2] Extension DB

All above spatial data and attribute data based on the location are the basic contents for the internet map service.

Data and ArcIMS Service Provider

GIS related company, government agency, college institute or individual that is providing the GeoNetKorea with map service and spatial data shall become of Provider. Enrollment shall be processed through the internet and then Provider writing the subscription purpose and the ability of GIS developer.   And also you may decide the field to act. The Provider may use or publicize the available spatial data and develop the map service with using the Framework DB.  In addition to it, the Provider shall supply ArcIMS and Esri Software in the form of evaluation, which are required for building of internet map service and education and technical support as well.

  · DSP(Data Service Provider)

Most of spatial data represents physical shapes of surface. The intention or purpose of DSP is to increase the effectiveness of all the spatial data retained by group or agencies through the common use.  First, the various types of spatial data retained by the enrolled members shall be publicized by the detailed metadata.  And also, it allows the user to verify the contents of spatial data prior to using by sample data.
The following figure and diagram shows the process of looking up the DSP spatial data. Everyone easily identify all of spatial data based on metadata and verifying the sample data, which is supplied by ArcIMS map service. When there is any request from Provider, whole spatial data shall be available to be serviced at the Provider’s server or GeoNetKroea server using the ArcIMS.

   
[Figure-5] Identify spatial data based on metadata

Basically, various themes to be supplied by DSP shall be overlapped and used in the various ways on the Framework DB.  In another word, DSP enables to raise the value of it’s data based on the location. For example, the provider who provides the phone numbers enables to add the information on the locations of the shops by address matching. In this case, parcel theme need necessary to relate. This means that the locations of x and y shall be added to the phone numbers so, the value of information shall be raised.
There are various types of establishing the spatial data of DSP such as Projection Data, Editing Data, Translation Data and so on.  Projection Data is the layer that is available to be overlapped with Framework DB only by operating in the projection method.  Editing Data means the production of layer through manipulation and revising works for building the spatial data. Translation Data requires the transformation work to be used at the Esri Software through the modification of structure of spatial data and commonly used the macro programs.  At the DSP we may share the information on AML and Avenue macro programs required for building the spatial data, and supplying the evaluation edition of Esri Software for Provider.

  · ASP(ArcIMS Service Provider)  

For ASP, group or agency with products, client and technology in the field where internet GIS application shall be applied shall be involved.  Development of software, hardware and spatial data, and maintenance are required for developing the internet GIS so, big investment is needed.
Therefore, ASP members shall describe the reason for enrollment of member and the required supports. And the enrolled Provider shall have the lots of benefits needed for developing the internet GIS.  ArcIMS evaluation edition, Framework DB by area/layer and educating opportunity on ArcIMS shall be provided to the enrolled members.  The completed map service after development process shall be publicized through the GeoNetKorea. We plan to draw lots of interests and participation by holding the ArcIMS developer competition at the CADLAND GIS Workshop for the year of 2002.

[Figure-6] An example of ASP map service

Solution

  · Map service based on location

DSP and ASP are combined into the Internet GIS Solution.  In another word, map service to be used for specific field was developed through the combination of Extension DB of DSP based on Framework DB for national wide map service.

  · Map service for locating the place

Map service for locating the place is the looking up service in national wise and shall be provided to internet user for nothing.  Its’ major functions are looking up address, building and key word.  If you want to look up the address, you may move to the place by entering the required parcel number after selecting the required province/city, city/county/district, dong in written order.  When you want to look up the building, you may move to the place on the required building place by entering the name of building after selecting the province/city, city/county/district, dong in written order.  For keyword looking up, enter the specific key word then you may move to the required place after searing for the annotation corresponding to the one of the required feature.

[Figure-7] Map service for locating the place

  · Map service for Locating the shops

This is the map service for the locations of Sports TOTO Shops.  Its' major functions are looking up the address, subway and key word.  Looking up the address is the service for looking up the TOTO Shop, which is nearest to your address. (Select the province/city, city/county/district, dong).
Looking up the subway allows you to look up all the TOTO shops within 300m from the selected subway station after selecting the subway line number.  Key word looking up provides the user with the information on the selected shop after searching for the name corresponding to the entered key word with the names of shops.

[Figure-8] Map service for locating TOTO shops

  · Map service for Homestaykorea's host

We provide the map service for locating the Homestaykorea’s host in English.  Its’ major functions are looking up the address, zip code and World Cup Stadium.  You may look up the location of the available host by selecting the province/city, city/county/district, dong.  Function of looking up the zip code allows you to look up the location of required host upon entering the zip code.  The function of looking up the World Cup stadium provides the map service for 10 World Cup stadiums in Korea.

[Figure-9] Map service for Homestaykorea's hosts

Future

Even if business model of Geography Network is used for GeoNetKorea, our GeoNetKorea is different from the Geography Network in terms of three points.  First, we focus on the business to be used to the internet GIS application fields through the practical combination of various extension DB and framework DB, which is cover national wide. Second, spatial data becomes of the valuable data only when it is manipulated and revised.  Third, data is not limited to the spatial data, various social and economical attribute information shall be included into it.  In another word, more valuable spatial data may need additional information. There are phone numbers, statistic information, building information, apartment information and income information.

 In the future, we, GeoNetKorea team, plan to proceed with the following fields.

• Map Contents Service
  - All the Extension spatial data to be used with framework DB shall be provided
  - Numbers of spatial data and metadata on the social and economical information shall be provided

  • Internet Map Solution
  - Differentiation from our competing companies by developing geoprocessing map service with using the function of ArcMapServer

  • Mobile Service
  - Shall provide the cellular phone and PDA with map service

  • Link to the Geography Network
  - Is in cooperation with Geography Network in spatial data and map service in English

Our team members and authors:

Jay-Joon, Yoon,CADLAND, Inc., President

Hee-beom Lee, CADLAND, Inc., Executive director of special interest department

Alex Lee, CADLAND, Inc., Senior manager of internet GIS team

Chea-Seung Kim,CADLAND, Inc., Assistant manager of DSP and ASP

Ik-hoi Kim,CADLAND, Inc., Manager of ArcIMS development

Seok-il Yoon, CADLAND, Inc., Manager of DSP and ASP

Cheol-seung Han, CADLAND, Inc., Application programmer of ArcIMS

Hyun-jo Kim, CADLAND, Inc., Application programmer of ArcIMS

Hyo-won Ban, CADLAND, Inc., Application programmer of Mobile GIS

Ho-Jun, Hwang, CADLAND, Inc., Application programmer of Mobile GIS