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Create Centerlines

Not available in the versions of ET GeoWizards for ArcGIS 8.x

Creates centerlines from polygon features.

Inputs:

• A polygon feature class. 
• Maximum Width.
• Minimum Width. 
• Centerline type
  • Inside - the centerlines will be created inside the polygons - suitable for deriving centerlines from rivers and streets represented by polygons
  • Outside - the centerlines will be created in the gaps between polygons - suitable for deriving street centerlines from cadastral data.

Outputs:

• New  polyline feature class 

Notes: 

• If the "Inside" option is used, the input polygons should represent linear by nature features (rivers, roads, etc.)
• If the "Outside" option is used, the gaps between the input polygons should represent linear by nature features (streets, etc.)
• The new feature class will not have any attributes.
• Maximum and Minimum widths should be specified in the units of the spatial reference of the input feature class
• Use reasonable for your data Maximum and Minimum widths. 
• The results might contain some unwanted lines. Inspect the results and remove undesired features.
• An option is available for smoothing the resulting centerlines. It is recommended not to use this option, but use the Smooth Polylines function after inspecting the results.
• The function is CPU and RAM intensive. Using it on large datasets might need long processing time. 

Examples:

• Centerlines Inside Polygons

• Centerlines Outside Polygons

Input Dataset	Result	Result (Detail)