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ArcScan Tutorial

ArcScan Tutorial

Exercise 1: Interactive vectorization Exercise 2: Automatic vectorization . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

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ArcScan Tutorial

Exercise 1:Interactive vectorization
ArcScan makes it easy to create new features from scanned raster images. This process can significantly reduce the time it takes you to incorporate raster data into your vector database. In this exercise, you will generate features from a scanned parcel map by interactively tracing raster cells. You will begin by starting ArcMap and loading a map document that contains theraster dataset and two layers. Setting up the ArcScan environment Requisito previo: You need to have the ArcScan for ArcGIS extension installed and registered. In addition, start ArcMap and add the Editor and ArcScan toolbars to the display. Pasos: 1. 2. 3. 4. 5. Click the Open button on the Standard toolbar.
Complejidad: Principiante Requisitos de datos: Configuración de datos de tutorial de ArcGISNavigate to the ArcScanTrace.mxd map document in the ArcScan directory where you installed the tutorial data and select it (C:\ArcGIS\ArcTutor is the default location). Click Open. To use ArcScan, you need to enable the extension. Click the Customize menu, click Extensions, check ArcScan, then click Close. Raster layers must be symbolized as two-color images to use the ArcScan tools andcommands. You will change the raster symbology from stretched to unique values. Right-click the ParcelScan.img raster layer in the ArcMap table of contents and click Properties. The Layer Properties dialog box appears. Click the Symbology tab on the Layer Properties dialog box. Click Unique Values in the Show box.

6. 7.

8.

Click OK.

Setting the raster snapping environment ArcScan is designedto work in conjunction with the ArcMap editing environment and is only active when an edit session has been started. You need to set some options for snapping while editing and using ArcScan.

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ArcScan Tutorial

Pasos: 1. Haga clic en el menú Editor y haga clic en Opciones. ArcScan uses the classic editing snapping environment rather thanthe Snapping toolbar. 2. 3. Haga clic en la pestaña General. Marque Utilizar alineación clásica. When you enable classic snapping, it disables the Snapping toolbar's snapping environment for use in editing. Therefore, once you have completed your work with ArcScan, you should reenable the Snapping toolbar by unchecking the Use classic snapping box.

4.

Click OK. The ArcScan extension is onlyactive in an edit session. The Start Editing command allows you to begin an edit session.

5. 6.

Haga clic en el menú Editor en la barra de herramientas Editor y haga clic en Comenzar la edición. Choose to start editing on the file geodatabase workspace and click OK. Raster snapping requires settings that influence the behavior of the tracing. These options are set on the Raster SnappingOptions dialog box.

7. 8.

Click the Raster Snapping Options button Snapping dialog box.

on the ArcScan toolbar to open the Raster

Set the maximum line width value to 7. This setting will ensure that you are able to snap to raster cells that represent the lot boundaries.