Multi-Layer Control and Graphical Feature Editing Using Server-Side Rendering on Ajax-GIS

Abstract

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.