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ESRI(R) ArcGIS(TM) Spatial Analyst is one of the available extensions to the ArcGIS(TM) Desktop products-- ArcInfo(TM), ArcEditor(TM), and ArcView(R). ArcGIS Spatial Analyst lets ArcGIS Desktop users create, query, and analyze cell-based raster maps; derive new information from existing data; query information across multiple data layers; and fully integrate cell-based raster data with traditional vector data sources. ArcGIS Spatial Analyst helps you answer questions such as How steep is it in a certain location? or What is the least-cost path from point A to point B? and many more spatially related problems you wish to solve. You will learn how to: Model spatial problems. Set up your analysis environment. Utilize the analysis capabilities of ArcGIS Spatial Analyst. Customize ArcGIS Spatial Analyst. Begin by following the quick-start tutorial to get an overview of how to perform spatial analysis using some of the functions of ArcGIS Spatial Analyst. If you prefer, jump right in and experiment on your own. When you have questions, you will find concise, step-by-step answers inside, fully illustrated, to help you complete a task.