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Aggregate Polygons

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Combines the polygons that are within the user specified distance into new polygons. Can be used also to generalize buildings.





Input Dataset

Result (No Minimum area of holes specified)

Result (Minimum area of holes specified)

Input Dataset

Aggregate distance = 1 meter

Aggregate distance = 5 meters Aggregate distance = 10 m Aggregate distance = 20 m

ToolBox implementation
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Command line syntax

ET_GPAggregatePolygons <input_dataset> <out_feature_class> <Aggregate_tolerance> <area_tolerance> 


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)
<Aggregate_tolerance> A Double representing  the aggregation distance. The polygons that are closer to each other than this distance will be combined
<area_tolerance> A Double representing  the minimum area of holes to be preserved. All holes with area less than this tolerance will be removed.

Scripting syntax

ET_GPAggregatePolygons (input_dataset, out_feature_class, Aggregate_tolerance,area_tolerance)

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

Example Python script:

import arcpy
arcpy.ImportToolbox("C:/Program Files/ET SpatialTechniques/ET GeoWizards 11.0 for ArcGIS 10.1/ET GeoWizards.tbx")
input_dataset = "C:\\data\\pg1.shp"
result = "C:\\data\\fgdb_test.gdb\\aggregated"
arcpy.gp.toolbox = "C:/Program Files/ET SpatialTechniques/ET GeoWizards 11.0 for ArcGIS 10.1/ET GeoWizards.tbx"
arcpy.ET_GPAggregatePolygons(input_dataset,  result, 10.00, 1000.00)
Copyright Ianko Tchoukanski