WebProcessing Service for Spatial Analysis using PyWPS and GRASS GIS
Sarawut Ninsawat
Graduate School for Creative Cities, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku Osaka 558-8585, Japan
Shinji Masumoto
Graduate School for Creative Cities, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku Osaka 558-8585, Japan
Yann Chemin
International Rice Research Institute, Los Banos, The Philippines
要旨
With increasing availability of geospatial data over the Web, there is a need to offer enhanced Web Services to users for data searching and sharing which have been largely standardized by adoption of WMS, WFS, WCS services and metadata standard. In this paper, we examine the ways and means to effectively implement WPS services in Web clients. At first, we examine possibilities of integrating CGI script written in Perl and/or UNIX shell scripts in existing Web GIS clients. A Web GIS interface could improve better understanding for area information for both before and after data processing and analysis. Furthermore, we discuss the limitation of such integration and describe methods to provide more standardized services using Python programming environment and data exchange in GML format. The study will focus on implementing Web Processing Service (WPS) 0.4 compliance with draft of Open Geospatial Consortium. The integrated Web client developed in this research handles both raster and vector processing and can be applied to offer availability of Web GIS solutions with analytical capabilities.
