# HfBinary (arcpy.sa)

## 插图 路径距离功能的 HfBinary 水平系数。

## 讨论

HfBinary 对象用于 Spatial Analyst 工具：路径距离路径距离分配路径距离回溯链接

## 语法

HfBinary ({zeroFactor}, {cutAngle})
 参数 说明 数据类型 zeroFactor The zeroFactor will be used to position the y-intercept of the binary function. (The zeroFactor is assigned as the horizontal factor when HRMA is less then the cutAngle.) (默认值为 1.0) Double cutAngle The cutAngle establishes the HRMA degree threshold beyond which the HFs are set to infinity. (When the HRMA is less than the cutAngle the horizontal factor is assigned to the zeroFactor; when the HRMA is greater than the cutAngle the horizontal factor is assigned infinity.) (默认值为 45) Double

## 属性

 属性 说明 数据类型 zeroFactor(读写) The zeroFactor will be used to position the y-intercept of the function. The zeroFactor is assigned as the horizontal factor when HRMA is less then the cut angle. Double cutAngle(读写) The cutAngle establishes the HRMA degree threshold beyond which the HFs are set to infinity. When the HRMA is less than the cut angle then the zero factor is assigned and when the HRMA is greater than the cut angle, infinity is assigned. Double

## 代码实例

HfBinary 示例 1（Python 窗口）

``````import arcpy
from arcpy import env
from arcpy.sa import *
env.workspace = "C:/sapyexamples/data"
myHfBinary = HfBinary(1.5, 45.5)
outPathDist = PathDistance("source.shp", "elevation", "", "", myHfBinary)
outPathDist.save("C:/sapyexamples/output/pathdisthfb")
``````
HfBinary 示例 2（独立脚本）

``````# Name: HfBinary_Ex_02.py
# Description: Uses the HFBinary object to execute the PathDistance tool.
# Requirements: Spatial Analyst Extension

# Import system modules
import arcpy
from arcpy import env
from arcpy.sa import *

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

# Set local variables
inSourceData = "sourcepts.shp"
inCostRaster = "elevation"

# Create the HfBinary Object
zeroFactor = 1.0
cutAngle = 45.0
myHorizFactor = HfBinary(zeroFactor, cutAngle)

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

# Execute
outPathDist = PathDistance(inSourceData, inCostRaster, "", "", myHorizFactor)

# Save the output
outPathDist.save("C:/sapyexamples/output/pathdisthfb2")
``````
5/10/2014