Creating contours on DEM layers
Contour creation involves several steps that define the way the contours are generated and where the layer is stored. You must specify a name for the contour layer that is generated, the interval for the contours, and the database in which the layer is stored.
![Hinweis Hinweis](rsrc/note.png)
You must have the ArcGIS Spatial Analyst extension enabled to perform this task. For information on enabling the ArcGIS Spatial Analyst extension, see Enabling the Spatial Analyst extension.
![Hinweis Hinweis](rsrc/note.png)
The smaller the interval, the longer it takes for the contour feature class to be generated, because more contour lines will be created.
- Start ArcMap.
Tipp:
If the ArcMap - Getting Started dialog box appears, you can open a new or existing map document. You can also check the Do not show this dialog box in the future check box and click Open.
- If necessary, load data in the map.
- On the main menu, click Customize > Toolbars > Production Contouring.
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Click the Create Contours button
on the Production Contouring toolbar.
The Create Contours dialog box appears.
Hinweis:
The Applicable Layers list displays the names of the DEMs that will be used to create contours. A contour feature class is created for each DEM listed. Turn off the visibility of any DEM that you do not want to create contours for using the table of contents.
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If necessary, type a value in the Base Contour text box.
The Base Contour value is the height from which all contours are created, both above and below the interval you specify.
- Type a value in the Contour Interval text box.
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Click the Open button
next to the Geodatabase Output field and navigate to the geodatabase you want to use to save your data.
- Click Open.
- Click OK.
The Contour Interval is the frequency in which contours are generated from the DEM.
![Tipp Tipp](rsrc/tip.png)