com.esri.arcgis.geoprocessing.tools.analysistools
Class CreateThiessenPolygons

java.lang.Object
  com.esri.arcgis.geoprocessing.AbstractGPTool
      com.esri.arcgis.geoprocessing.tools.analysistools.CreateThiessenPolygons

All Implemented Interfaces:

GPTool

public class CreateThiessenPolygons
extends AbstractGPTool

Converts input points to an output feature class of Thiessen proximal polygons. Thiessen polygons have the unique property that each polygon contains only one input point, and any location within a polygon is closer to its associated point than to the point of any other polygon. The Create Thiessen Polygons tool is contained in the Analysis Tools tool box.

Software restrictions: ArcInfo only

Illustration:

Usage tips:

• Thiessen polygons can be used to apportion a point coverage into polygons known as Thiessen or Voronoi polygons. Each polygon contains only one Input Features point. Each polygon has the unique property that any location within the polygon is closer to the polygon's point than to the point of any other polygon.
• The Thiessen polygons are constructed as follows:All points are triangulated into a triangulated irregular network (TIN) that meets the Delaunay criterion.The perpendicular bisectors for each triangle edge are generated, forming the edges of the Thiessen polygons. The location at which the bisectors intersect determine the locations of the Thiessen polygon vertices.
• The outside boundary of the Thiessen polygons is the extent of the points used plus an additional 10%. If the Extent; environment is set to a specific set of values, CreateThiessenPolygons will use the environment to set its outside boundary.
• The following environments affect this tool: configKeyword; extent; MDomain; outputCoordinateSystem; outputMFlag; outputZFlag; scratchWorkspace; spatialGrid1; spatialGrid2; spatialGrid3; workspace; XYDomain; , and ZDomain;

Field Summary

Fields inherited from class com.esri.arcgis.geoprocessing.AbstractGPTool

vals

Constructor Summary

CreateThiessenPolygons()
Creates the Create Thiessen Polygons tool with defaults.

CreateThiessenPolygons(Object inFeatures, Object outFeatureClass)
Creates the Create Thiessen Polygons tool with the required parameters.

Method Summary

String	getFieldsToCopy() Returns the Output Fields parameter of this tool .
Object	getInFeatures() Returns the Input Features parameter of this tool .
Object	getOutFeatureClass() Returns the Output Feature Class parameter of this tool .
String	getToolboxAlias() Returns the alias of the tool box containing this tool.
String	getToolboxName() Returns the name of the tool box containing this tool.
String	getToolName() Returns the name of this tool.
void	setFieldsToCopy(String fieldsToCopy) Sets the Output Fields parameter of this tool .
void	setInFeatures(Object inFeatures) Sets the Input Features parameter of this tool .
void	setOutFeatureClass(Object outFeatureClass) Sets the Output Feature Class parameter of this tool .

Methods inherited from class com.esri.arcgis.geoprocessing.AbstractGPTool

getParameterValues, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

CreateThiessenPolygons

public CreateThiessenPolygons()

Creates the Create Thiessen Polygons tool with defaults.

Initializes the array of tool parameters with the default values specified when the tool was created.

CreateThiessenPolygons

public CreateThiessenPolygons(Object inFeatures,
                              Object outFeatureClass)

Creates the Create Thiessen Polygons tool with the required parameters.

Initializes the array of tool parameters with the values as specified for the required parameters and with the default values for the other parameters.

Parameters:

inFeatures - Feature Layer, the points for which the Thiessen polygons will be generated.

outFeatureClass - Feature Class, the polygon feature class that will contain the Thiessen features.

Method Detail

getInFeatures

public Object getInFeatures()

Returns the Input Features parameter of this tool . This parameter is Feature Layer, the points for which the Thiessen polygons will be generated. This is a required parameter.

Returns:

the Input Features

setInFeatures

public void setInFeatures(Object inFeatures)

Sets the Input Features parameter of this tool . This parameter is Feature Layer, the points for which the Thiessen polygons will be generated. This is a required parameter.

Parameters:

inFeatures - Feature Layer, the points for which the Thiessen polygons will be generated.

getOutFeatureClass

public Object getOutFeatureClass()

Returns the Output Feature Class parameter of this tool . This parameter is Feature Class, the polygon feature class that will contain the Thiessen features. This is a required parameter.

Returns:

the Output Feature Class

setOutFeatureClass

public void setOutFeatureClass(Object outFeatureClass)

Sets the Output Feature Class parameter of this tool . This parameter is Feature Class, the polygon feature class that will contain the Thiessen features. This is a required parameter.

Parameters:

outFeatureClass - Feature Class, the polygon feature class that will contain the Thiessen features.

getFieldsToCopy

public String getFieldsToCopy()

Returns the Output Fields parameter of this tool . This parameter is String, determines which attributes from the Input Features will be transferred to the Output Feature Class. This is an optional parameter.

Returns:

the Output Fields

setFieldsToCopy

public void setFieldsToCopy(String fieldsToCopy)

Sets the Output Fields parameter of this tool . This parameter is String, determines which attributes from the Input Features will be transferred to the Output Feature Class. This is an optional parameter.

Parameters:

fieldsToCopy - String, determines which attributes from the Input Features will be transferred to the Output Feature Class.

getToolName

public String getToolName()

Returns the name of this tool.

Returns:

the tool name

getToolboxName

public String getToolboxName()

Returns the name of the tool box containing this tool.

Returns:

the tool box name

getToolboxAlias

public String getToolboxAlias()

Returns the alias of the tool box containing this tool.

Returns:

the tool box alias