PointToPolygon

Points To Polygons

Converts a point data set to a polygon dataset. Attaches to the polygon attribute table the values of the attributes for the first and last point that form a single polygon

Inputs:

A point feature layer
- REQUIRED: an ID field which value defines the points to be used for creation of each polygon
- OPTIONAL: an Order field that defines in what sequence the points describe the polygon. If no Order field is used the order is defined by the record number of the points
- OPTIONAL: a Link field. The values for the first and last point that will form a single polygon will be added to the polygon attribute table.
- OPTIONAL: Z Value field. If specified a PolygonZ feature class will be created. The values in this field will be set as Z values for the vertices. If the input points have Z values, the user can specify the Z values of the input points to ve used by selecting "Features" for Z Value field.
- OPTIONAL: M Value field. If specified a PolygonM feature class will be created. The values in this field will be set as M values for the vertices. If the input points have M values, the user can specify the M values of the input points to ve used by selecting "Features" for M Value field.

Outputs:

New polygon feature class
Fields to be added to the polyline attribute table
- [ET_ID] - the field used as Polygon ID
- [ET_FromAtt] - the values of the start point of the polygon in the Link field (if link field is used)
- [ET_ToAtt] - the values of the end point of the polygon in the Link field (if link field is used)

Notes:

There should be at least three points with the same value in the ID field in order polygons to be created.

Example: See the example for Points To Polylines function

Running Programmatically

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Parameters

Expression	Explanation
Function Name	PointsToPolygons
<input dataset>	A String representing the input layer. Must be of Point type.
<output dataset>	A String - the full name of the output layer.
<ID Field>	A String - the name of the field which values will indicate the points used to form a single Polygon feature.
{Order Field}	A String - the name of a Numeric (integer or double) field which values will indicate the order in which the points describe the polygons.If no Order field is used the order is defined by the record number of the points.
{Z Field}	A String - the name of the field which values will be used for Z values of the vertices. "Features" can be used if the input points have Z.
{M Field}	A String - the name of the field which values will be used for M values of the vertices. "Features" can be used if the input points have M.
{Link Field}	A String - the name of a field to be used as a link between the input points and the output. The values for the first and last point that will form a single polyline will be added to the polyline attribute table.

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, "PointsToPolygons", "input dataset", "output dataset", "ID Field", "Order Field", "Z Field", "M Field","Link Field"])
.NET using ETGWRun.exe	StartInfo.FileName = ETGWPath StartInfo.Arguments = "PointsToPolygons" "input dataset" "output dataset" "ID Field" "Order Field" "Z Field" "M Field" "Link Field"
.NET using ETGWOutX.dll	PointsToPolygons(input dataset, output dataset, ID Field, Order Field, Z Field, M Field,Link Field)
ArcPy	arcpy.PointsToPolygons(input dataset, output dataset, ID Field, "Order Field", "Z Field", M Field, Link Field)

Notes:

<> - required parameter
{} - optional parameter
See examples for Python , .NET or ArcPy
The argument separator for StartInfo.Arguments is space. If a string might contain a space, you need to double quote it.

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