sa_tutorial - University of Florida, School of Landscape...

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University of Florida, School of Landscape Architecture and Planning, URP4273, Prepared by Juna Papajorgji 1 This tutorial stems from the Spatial Analyst Tutorial prepared by ESRI for ArcGIS 10, but it is a simplified and a different one. It is recommended that once you have completed this tutorial, you go through the ESRI’s tutorial and further expand your understanding of the potential of Spatial Analyst. The town of Stowe in Vermont has experienced an increase of families with children and it is considering building a new school. As a citizen advocate for the public interest you are volunteering your GIS knowledge to help community organizat ions that represent children’ s interests to propose a suitable site. To come up with some preliminary alternatives for the school site you have identified three simple criteria: 1. The new school should not be located close to existing schools 2. The new school should be located nearby recreational facilities 3. The new school should be built on suitable land use You have also collected the appropriate GIS datasets that will support these criteria (courtesy of the state of Vermont and prepared by ESRI), and you are now ready to start your analysis. It is also assumed that you have copied the folder ‘ sa ’ and its files and subfolders somewhere accessible. Step 0 - Enable Spatial Analyst and explore the datasets Start ArcMap and click on menu Customize>Extensions, check Spatial Analyst and close the dialog Extensions. This will load the Spatial Analyst extension. Click on menu Customize >Toolbars and check Spatial Analyst. This will add a few Spatial Analyst functions to the ArcMap interface via a new Toolbar.
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University of Florida, School of Landscape Architecture and Planning, URP4273, Prepared by Juna Papajorgji 2 Now click over the red button for the ArcToolbox and take a look at the Spatial Analyst functions organized in tools and toolsets. There are approximately 170 tools. These tools are not visible if the Spatial Analyst extension is not loaded. Now that you have enabled the Spatial Analyst we will add the data collected for our study area. Close Tool Box and click on button ‘Connect to Folder’ to set a connection with the folder ~\sa under which you stored the data for this tutorial. Click on the Add Data button (plus sign icon) and bring all the data into ArcMap. Press shift key, highlight them all and click on Add Data.
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3 You have added five datasets to ArcGIS. Two of them are in a raster format called grid (elevation and landuse). The Elevation dataset is a continuous surface grid, the Landuse dataset is a discrete values grid. ArcGIS draws the data with random symbols. Go over each of the data layers one by one and explore them. You may want to re-arrange them and/or change symbols and set transparencies. But you definitely want to view the information in their attribute tables. For this:
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sa_tutorial - University of Florida, School of Landscape...

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