Threshold Trade Areas (Business Analyst)
摘要
Creates rings around your stores. The radii of the rings are determined by expanding from the store location until they meet your criteria.
插图
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用法
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The spatial reference of the output feature class will be the same as the store layer.
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The store layer input feature class must be point features.
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In most cases, the store layer input feature layer will be a Business Analyst store layer.
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Valid numeric units must be used when defining radii values. Negative values cannot be used for threshold radii.
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Selecting all sites to use will create rings for each point feature in the ring centers (stores) input feature class.
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In ArcMap, trade areas will only be created for features that are within the active study area or analysis extent.
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The threshold layer must be a point or polygon feature class and be set up as a Business Analyst Dataset (BDS) layer. In most cases, you should select the block group or block points layer.
语法
| 参数 | 说明 | 数据类型 |
InputFeatureLayer |
The input feature class containing center points for the rings. In most cases, this will be a Business Analyst store layer. | Feature Layer |
IDField |
Unique ID field in the ring center (store) layer. | Field |
All_Or_Single_Or_Selected |
Creates rings for points in the input feature layer.
| String |
ThresholdFeatureLayer |
The input feature class containing the threshold data that will determine the radii. | Feature Layer |
ThresholdPopulationField |
The threshold value field contained in the threshold layer. | Field |
MeasureUnits (可选) |
The units used with the distance values. By default, the units defined in the Business Analyst preferences will be selected.
| String |
RingsCollection RingsCollection;RingsCollection... |
The number of radii and the threshold values for each ring. | Double |
OutputFeatureClass |
The feature class that will contain the ring features. | Feature Class |
ByID_Or_ByName (可选) |
Field used to select a single point.
| String |
Single_Site (可选) |
ID or name of store to be used as the single point. | String |
UsedAlghoritm (可选) |
The technique that will be used the generate the threshold trade areas.
| String |
Donut (可选) |
Defines whether to create nonoverlapping concentric rings or donut bands.
| Boolean |
BarrierFeatureClasses [BarrierFeatureClasses,...] (可选) |
You can place point, line, or polygon barriers when using drive time or drive distance algorithms to calculate distances. | Feature Layer |
UseOnlineData (可选) |
Access online Business Analyst data to use in the analysis.
Select to access online Business Analyst data to use in the analysis.
| Boolean |
代码实例
# Name: ThresholdStaticRing.py
# Description: Creates 3 thresholds rings around selected stores based on total population.
# Author: Esri
# Import system modules
import arcview
import arcpy
arcpy.AddToolbox("C:\Program Files (x86)\ArcGIS\Desktop10.2\Business Analyst\ArcToolbox\Toolboxes\Business Analyst Tools.tbx")
try:
# Acquire extension license
arcpy.CheckOutExtension("Business")
# Define input and output parameters for the Threshold Trade Areas tool
StorePath = "C:/temp/sf_stores.shp"
IdFld = "FID"
ThresholdLayer = "C:/ArcGIS/Business Analyst/US_2013/Data/BDS/esri_bg.bds"
FieldThreshold = "TOTPOP_CY"
OutPath = "C:/temp/ThresholdStaticRings.shp"
# Create Threshold Trade Areas
arcpy.ThresholdStaticRing_ba(StorePath, IdFld, "ALL", ThresholdLayer, FieldThreshold, "100000;200000;300000", OutPath)
# Release extension license
arcpy.CheckInExtension("Business")
except:
print arcpy.GetMessages(2)