Department of Geography SUNY at Buffalo Department of Geography WebGIS Addresser: Yeming FAN

Outline What is WebGIS Why WebGIS ESRI’s two products for WebGIS General structure of WebGIS systems Two cases Discussions

What is WebGIS ? WebGIS is the solution for distributing mapping and GIS data and services on the Web. Not only “Web mapping” Always a distributed system

Why WebGIS ? Just a fancy word? Data sharing Accessibility Cost Convenience

ESRI’s two products for WebGIS ArcIMS ArcIMS (Internet Map Server) — enables users to distribute high-end on-line GIS and mapping services and to display, query, integrate, and analyze local and remote data sources in a browser.

Some features of ArcIMS: Easy to get started Small but fast Support both “Thin client” and “Fat client” structures ESRI's development of ArcIMS is now limited.

ESRI's main server GIS product now. ArcGIS Server ArcGIS Server connects people with geographic information via Web applications and services. Some features of ArcGIS Server: Data Management Spatial analysis Spatial Web Editing Functionality ESRI's main server GIS product now.

General structure of WebGIS systems

Two cases ArcIMS Case Erie County Intranet Mapping Service http://gis1.erie.gov/website/erieny/Viewer.htm ArcGIS Server Case: Sample Flex Viewer from ESRI http://www.esri.com/serverdemos/flexviewer/index.html

Discussions Many products for WebGIS are available The trend of GIS A necessary preparation for semantic web

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