Ajax-GISにおけるサーバサイドレンダリングを用いたレイヤ制御と図形編集

摘要

This paper presents the methods of the multi-layer control and the graphical feature editing by the server side rendering in Ajax-GIS. Ajax-GIS uses divided raster image file called "tile" in order to keep light handling. We propose that the multi-layer control is realized by means of merging tiled images in the server application as the requests of the client application. Furthermore we propose the graphical feature editing protocol that sent from a client and send back to an image in order to edit a feature such as moving vertices, changing color. In an evaluation experiment of an actual map data, we confirmed the effectiveness of these methods as comparing with conventional methods.%GIS（Geographic Information System）は，地図情報，そrnれに付随する様々な属性情報をコンピュータ上で表示，管rn理，分析するシステムである。地図情報はレイヤ毎に管理rnされているため，必要な情報のみを表示することが可能でrnある。