How To: Create polygons from contour polylines
Polygons are created from contour polylines for several reasons, including honoring barriers for better-looking geographical surface representation, offering better contour data visualization, and improving contour data representation for analysis.
The instructions provided describe how to create polygons from contour lines in ArcMap.
There are two options to create polygons from contour polylines. Option A is to use the Feature to Polygon tool while Option B is to use the Convert Polylines To Polygon tool.
Note: The contour lines must be enclosed line segments before polygons can be created. Trace the lines and manually close the lines or find polylines or paths that close on themselves.
Option A - Apply the Feature to Polygon tool
- In ArcMap, navigate to ArcCatalog > Toolboxes > System Toolboxes > Data Management > Features > Feature To Polygon
- Fill in the parameters and click OK.
Option B - Use the Covert Polylines To Polygon tool
See the Web Help topic, Creating polygons from polylines
Note: The Covert Polylines To Polygon tool is available with a Production Mapping license.
- ArcGIS Help: Polyline to Raster (Conversion)
- ArcGIS Help: Raster to Polygon (Conversion)
- ArcGIS Help: Feature To Polygon (Data Management)
- ArcGIS Help: Dissolve (Data Management)
- ArcGIS Help: Creating polygons from polylines