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Implementing MapServer As Web Map Service (WMS) Applications for Spatial Data Sharing and Interoperability Case Study at Center For Marine Resources Surveys, National Coordinating Agency For Surveys And Mapping (BAKOSURTANAL)
Data spatial productions at center for marine resources surveys and another center at Bakosurtanal are growing rapidly. The integration each center / unit are not satisfactory made yet. The integration capabilities of a Spatial data allow disparate data sets to be brought together to create a complete picture of a situation. Peoples and Organizations are waiting for spatial data that Bakosurtanal produced. The contribution of spatial data to society and people's life is not satisfactory made yet. Spatial data needs to be shared as soon as possible to accelerate and supporting government and organization for decision making and sustainable social and economic development, but it is difficult to implement due to the heterogeneity of spatial data. Therefore, web service based solution to facilitate the integration and share of spatial data MapServer as open source (free) software are able to make spatial data sharing and integration enables. Customizing Mapserver as Web Map Services (WMS) made spatial data can be accessed over the Internet. With this, accessibility, integrity and interoperability enables the integration of data between organizations and across applications and industries, resulting in the generation and sharing of more useful information. 1. INTRODUCTION National Spatial Data Infrastructure (NSDI) has been establish in Indonesia in the last decade. Each department has been seriously take action on their contribution in NDSI. Bakosurtanal as NSDI initiator and coordinator survey and mapping for spatial data producer also developing internal Spatial Data Infrastructure (SDI) supported by each center. Each center focus on spatial data productions, data processing and data analysis but the integration are not satisfactory made yet before. This situation are contradictory that on the one hand the huge funds was spent and the large volume of spatial data was produced, on the other hand proper or usable data was scarce or data could not be shared or interoperated because of data itself. Today, Each Center are developing spatial data sharing and interoperability applications enables using various technology. Society, departments and organizations are waiting for spatial data that Bakosurtanal produced. On high speed technology era spatial data sharing and interoperability should not be a huge problems, Internet protocol can be a solutions for this reason. Center for Marine Resources, one of centers at Bakosurtanal in supporting SDI made a great progress by developing web map service for spatial data sharing. This paper expose method spatial data sharing and interoperability enable over the internet. 2. Approach The technical implementation of spatial data sharing and interoperability include three methods, namely data format exchange method, direct data access method and the Open Geo-data Interoperability Specification (OGIS) -based method. These three technical methods are in the different application field respectively and are improved constantly (Feng Wang). In this discussion, OGIS - based method will only be exposes. OGIS was founded by Open GIS Consortium (OGC) in 1996 and the aim was to transparently get geographic data needed by end users in a heterogeneous distributed environment. Web Service and XML have become mainstream technique to construct platform-spanned heterogeneous application and data exchange. Web services interoperate (communicate) through an XML-based protocol known as Simple Object Access Protocol (SOAP). This is an XML API to the functions provided by a Web service. Each Web service "advertises" its SOAP API using a mechanism called Web Services Description Language, allowing easy discovery of any service's capabilities. Web services provide an open, interoperable, and highly efficient framework for implementing systems. They are interoperable because each piece of software communicates with each other piece via the standard SOAP and XML protocols. |
