Neighborhood Selection (Geostatistical Analyst)

Mit der Geostatistical Analyst-Lizenz verfügbar.

Zusammenfassung

Creates a layer of points based on a user-defined neighborhood.

The output layer contains the selection set of 10 selected blue points.

For example, you might wish to create a selection of points in a circular neighborhood around a location defined by the Input point. The illustration above demonstrates that the output will be the 10 points, colored blue, that fall within the circle.

Verwendung

• This tool can be used in conjunction with the interpolation tools when different searching neighborhoods are examined.

Parameter

Dialogfeld

Beschriftung	Erläuterung	Datentyp
Input point features	Points used to create a neighborhood selection.	Feature Layer
Output layer	Layer to store the neighborhood selection.	Feature Layer
Input point	The neighborhood center's x,y coordinate.	Point
Maximum neighbors to include	The number of points to use in each sector. If a sector has the required number of points, all points in that sector are used.	Long
Include at least	The minimum number of points to use in each sector. If the minimum number of required points are not available in any given sector, the nearest available point outside the sector will be selected.	Long
Minor semiaxis	Size of the minor semiaxis of the search neighborhood.	Double
Major semiaxis	Size of the major semiaxis of the search neighborhood.	Double
Angle	The angle of rotation of the neighborhood axis.	Double
Shape type (optional)	The geometry of the neighborhood. One sector— Single ellipse Four sectors— Ellipse divided into four sectors Four shifted sectors— Ellipse divided into four sectors and shifted 45 degrees Eight sectors— Ellipse divided into eight sectors	String

Python

arcpy.ga.GANeighborhoodSelection(in_dataset, out_layer, point_coord, neighbors_max, neighbors_min, minor_semiaxis, major_semiaxis, angle, {shape_type})

Name	Erläuterung	Datentyp
in_dataset	Points used to create a neighborhood selection.	Feature Layer
out_layer	Layer to store the neighborhood selection.	Feature Layer
point_coord	The neighborhood center's x,y coordinate.	Point
neighbors_max	The number of points to use in each sector. If a sector has the required number of points, all points in that sector are used.	Long
neighbors_min	The minimum number of points to use in each sector. If the minimum number of required points are not available in any given sector, the nearest available point outside the sector will be selected.	Long
minor_semiaxis	Size of the minor semiaxis of the search neighborhood.	Double
major_semiaxis	Size of the major semiaxis of the search neighborhood.	Double
angle	The angle of rotation of the neighborhood axis.	Double
shape_type (optional)	The geometry of the neighborhood. ONE_SECTOR— Single ellipse FOUR_SECTORS— Ellipse divided into four sectors FOUR_SECTORS_SHIFTED— Ellipse divided into four sectors and shifted 45 degrees EIGHT_SECTORS— Ellipse divided into eight sectors	String

Codebeispiel

NeighborhoodSelection example 1 (Python window)

Create a feature layer based on some neighborhood criteria.

import arcpy
from arcpy import env
env.workspace = "C:/gapyexamples/data"
arcpy.GANeighborhoodSelection_ga("ca_ozone_pts", "outNS", "-2000000 -50000", 
                                 "20", "5","200000", "200000", "0", "One sector")

NeighborhoodSelection example 2 (stand-alone script)

Create a feature layer based on some neighborhood criteria.

# Name: NeighborhoodSelection_Example_02.py
# Description: Creates a layer of points based on a user-defined neighborhood.
# Requirements: Geostatistical Analyst Extension

# Import system modules
import arcpy

# Set environment settings
arcpy.env.workspace = "C:/gapyexamples/data"

# Set local variables
inPoints = "ca_ozone_pts.shp"
outLayer = "outNS"
pointCoord = "-2000000 -50000"
maxNeighbors = 20
minNeighbors = 5
majSemiaxis = 200000
minSemiaxis = 200000
angle = 0
shape = "One Sector"

# Execute NeighborhoodSelection
arcpy.GANeighborhoodSelection_ga(inPoints, outLayer, pointCoord, maxNeighbors,
                                 minNeighbors, majSemiaxis, minSemiaxis, angle,
                                 shape)

Umgebungen

Aktueller Workspace

Sonderfälle

Lizenzinformationen

• Basic: Erfordert Geostatistical Analyst
• Standard: Erfordert Geostatistical Analyst
• Advanced: Erfordert Geostatistical Analyst