Create Concave Hull

Running programmatically

The Concave Hull function creates a polygon that represents the area occupied by a set of data points.

Convex

Non Convex (Concave)

Convex Hul

Concave Hull

Source Data

Convex Hull

Concave Hull 1

Concave Hull 2

Inputs:

Outputs:

Running Programmatically

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Parameters

Expression Explanation
Function Name CreateConcaveHull
<input dataset> A String representing the input layer. Must be of Polygon type.
<output dataset> A String - the full name of the output layer.
<Distance Treshold> A Double representing the threshold for creating a concave hull - in the units of the spatial reference of the input dataset.

Running the function

ETGWPath used in the table below is the  full path to ETGWRun.exe (E.G. "C:\Program Files\ETSpatial Techniques\ETGeo Wizards\ETGWRun.exe")

Language Syntax
Python subprocess.call([ETGWPath, "CreateConcaveHull", "input dataset", "output dataset", "Distance Treshold"])
.NET using ETGWRun.exe StartInfo.FileName = ETGWPath
StartInfo.Arguments = "CreateConcaveHull" "input dataset" "output dataset" "Distance Treshold"
.NET using ETGWOutX.dll CreateConcaveHull(input dataset, output dataset, Distance Treshold)
ArcPy arcpy.CreateConcaveHull(input dataset, output dataset, "Distance Treshold")

Notes:

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