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Create Centerlines

Go to ToolBox Implementation

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

Creates centerlines from polygon features.





Input Dataset


Result (Detail)

Input Dataset


Result (Detail)

ToolBox implementation
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Command line syntax

ET_GPCreateCenterlines <input_dataset> <out_feature class> <maximum_width> <minimum_width> <centerlines_type> {smooth_centerlines}


Expression Explanation
<input_dataset> A Polyline feature class or feature layer
<out_feature class> A String - the full name of the output feature class (A feature class with the same full name should not exist)
<maximum_width> A Double representing  the aggregation distance. The polygons that are closer to each other than this distance will be combined
<minimum_width> A Double representing  the minimum area of holes to be preserved. All holes with area less than this tolerance will be removed.
<centerlines_type> Required. A String indicating the type of centerlines to be created. Case sensitive.
  • 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.
{smooth_centerlines} A Boolean indicating whether the resulting centerlines will be smoothed. B-Spline smoothing algorithm is used 

Scripting syntax

ET_GPCreateCenterlines (input_dataset, out_feature class, maximum_width, minimum_width,centerlines_type, smooth_centerlines )

See the explanations above:
<> - required parameter
{} - optional parameter

Copyright Ianko Tchoukanski