You can take any image, and you can vectorize it with ArcScan. This means you’ll spend less time digitizing and more time doing other. Quick-start tutorial. • Exercise 1: Raster tracing. • Exercise 2: Batch vectorization. 2. ArcScan for ArcGIS software has the tools you need to convert your scanned.
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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 the raster dataset and two layers. ArcScan is designed to 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. Now that you have set up your raster snapping environment, you are ready to begin tracing the raster cells.
You will use the Vectorization Trace tool for this step. A line feature now represents the exterior boundaries of the scanned parcel lots.
Exercise 1: Interactive vectorization
Now that you have successfully traced raster cells to create line features, you will create polygon features using the Vectorization Trace tool. In this exercise you learned how to set the raster snapping options and environment, snap to raster cells, and trace raster cells to create new line and polygon aecgis.
These steps covered the main components of the raster tracing process. The next exercise will show you how to edit a raster layer and automatically generate features for an entire raster layer using the batch vectorization tools.
Setting up the ArcScan environment Prerequisite: Click the Open button on the Standard toolbar. Navigate to the ArcScanTrace.
To use ArcScan, you need to enable the extension. Raster layers must be symbolized as two-color images to use the ArcScan tools and commands. You will change the raster symbology from stretched to unique values.
Exercise 1: Interactive vectorization—Help | ArcGIS Desktop
The Layer Properties dialog box appears. Click the Symbology tab on the Layer Properties dialog box. Click Unique Values in the Show box.
Setting the raster snapping environment ArcScan is designed to work in conjunction with the ArcMap editing environment and is only active when an edit session has been started. Click the Editor menu and click Options. ArcScan uses the classic editing snapping environment rather than the Snapping toolbar.
When you enable classic snapping, it disables arcscab 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. The ArcScan extension is only active in an edit session.
The Start Editing command allows you to begin an edit session. Raster snapping requires settings that influence the behavior of the tracing.
These options are set on the Raster Snapping Options dialog box. Now, you need to turn on SnapTips, which are pop-up messages that give you information on the type of snapping that is active as you move your pointer around tutoriql map.
Once you have finished tracing the raster cells, you can stop editing and complete the exercise by saving your edits.