Spatial information sharing with patch-working of feature drawings

While many people use digital maps in their car navigation systems or on the Web, many potential users are still overwhelmed by spatial information sharing. They are nervous about maintaining maps, which need to be kept up to date. We discuss the problem of maintaining geodata and describe the basic concept of MW (Marche World) and one of its groupware applications. Its ideas of spatial information headers and a floating coordinate system conform to the access control architecture for charging for spatial contents and enable the innovative utilization of geodata. Charging contents could not only reduce the initial installation cost, but could also continuously charge various users an appropriate price. We developed a prototype system for a police traffic department. Its multi-resolution data of drawings, photos and maps is shared and kept alive among a variety of organizations by the virtual workflow of the maintenance