SearchNeighborhoodSmooth

摘要

SearchNeighborhoodSmooth 类可用于定义以下邻域搜索方法：反距离权重法、局部多项式插值法、和径向基函数插值法（仅在使用 INVERSE_MULTIQUADRIC_FUNCTION 关键字的情况下使用）。平滑搜索邻域类接受如下输入：短轴和长轴、搜索椭圆的大小、搜索椭圆的角度和平滑系数。

了解有关平滑插值法的详细信息

语法

 SearchNeighborhoodSmooth ({majorSemiaxis}, {minorSemiaxis}, {angle}, {smoothFactor})

参数	说明	数据类型
majorSemiaxis	以地图单位表示的距离，指定从其中选择数据的椭圆的长半轴长度。	Double
minorSemiaxis	以地图单位表示的距离，指定从其中选择数据的椭圆的短半轴长度。	Double
angle	搜索椭圆的角度。	Double
smoothFactor	确定要执行的平滑量：0 为无平滑；1 为最大平滑量。	Double

属性

属性	说明	数据类型
angle (可读写)	搜索椭圆的角度。	Double
majorSemiaxis (可读写)	以地图单位表示的距离，指定在其中选择数据的椭圆的长半轴长度。	Double
minorSemiaxis (可读写)	以地图单位表示的距离，指定在其中选择数据的椭圆的短半轴长度。	Double
nbrType (只读)	邻域类型：平滑或标准。	String
smoothFactor (可读写)	确定要执行的平滑量：0 为无平滑，1 为最大平滑量。	Double

代码示例

SearchNeighborhoodSmooth（Python 窗口）

使用 SearchNeighborhoodSmooth 和“局部多项式插值法”来生成输出栅格。

import arcpy
arcpy.env.workspace = "C:/gapyexamples/data"
arcpy.LocalPolynomialInterpolation_ga(
    "ca_ozone_pts", "OZONE", "outLPI", "C:/gapyexamples/output/lpiout", "2000",
    "2", arcpy.SearchNeighborhoodSmooth(300000, 300000, 0, 0.5), "QUARTIC", 
    "", "", "", "", "PREDICTION")

SearchNeighborhoodSmooth（独立脚本）

使用 SearchNeighborhoodSmooth 和“局部多项式插值法”来生成输出栅格。

# Name: LocalPolynomialInterpolation_Example_02.py
# Description: Local Polynomial interpolation fits many polynomials, each 
#              within specified overlapping neighborhoods. 
# Requirements: Geostatistical Analyst Extension

# Import system modules
import arcpy

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

# Set local variables
inPointFeatures = "ca_ozone_pts.shp"
zField = "ozone"
outLayer = "outLPI"
outRaster = "C:/gapyexamples/output/lpiout"
cellSize = 2000.0
power = 2
kernelFunction = "QUARTIC"
bandwidth = ""
useConNumber = ""
conNumber = ""
weightField = ""
outSurface = "PREDICTION"

# Set variables for search neighborhood
majSemiaxis = 300000
minSemiaxis = 300000
angle = 0
smoothFactor = 0.5
searchNeighbourhood = arcpy.SearchNeighborhoodSmooth(majSemiaxis, minSemiaxis,
                                                     angle, smoothFactor)


# Check out the ArcGIS Geostatistical Analyst extension license
arcpy.CheckOutExtension("GeoStats")

# Execute LocalPolynomialInterpolation
arcpy.LocalPolynomialInterpolation_ga(inPointFeatures, zField, outLayer, outRaster,
                                      cellSize, power, searchNeighbourhood,
                                      kernelFunction, bandwidth, useConNumber,
                                      conNumber, weightField, outSurface)