Data Driven Rings (Business Analyst)
Zusammenfassung
Creates a new feature class of ring trade area features. The radii are determined by a field in the ring center (store) layer.
Abbildung
Verwendung
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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 input Store Layer must be point features.
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In most cases, the input Store Layerwill be a Business Analyst store layer.
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Selecting ALL in the Sites to use parameter will create rings for each point feature in the input Store Layer
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If Remove Overlap is checked, Thiessen polygons are used to remove overlap between output ring polygons.
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The Value per unit field determines the data value used to set the threshold for your rings, must be numeric, and cannot be negative.
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If your Store Layer contains a field that has actual radii for each store point, set the value per unit to one.
Syntax
Parameter | Erläuterung | Datentyp |
InputFeatureLayer |
The input feature class containing center points for the rings. In most cases, this will be a Business Analyst store layer. | Feature Class |
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 |
RadiusFieldName |
Field used to determine radii of the rings. | Field |
ValuePerUnit |
Value entered proportional to one measured unit. For example, $50,000 in sales is equal to 1 mile. | Double |
MeasureUnits (optional) |
The units used with the distance values. By default, the units defined in the Business Analyst preferences will be selected.
| String |
OutputFeatureClass |
The feature class that will contain the ring features. | Feature Class |
ByID_Or_ByName (optional) |
Field used to select a single point.
| String |
Single_Site (optional) |
ID or name of store used as the single point. | String |
RemoveOverlap (optional) |
Creates overlapping concentric rings or removes overlap.
| Boolean |
ExpValue (optional) |
An exponent value to determine the size of the data-driven rings. This exponent is the same type of exponent used in the Huff Modeling. | Double |
Codebeispiel
# Name: DataDrivenRings.py # Description: Creates ring based trade areas in San Francisco based on sales values in a store layer. # Author: ESRI # Import system modules import arcview import arcpy arcpy.AddToolbox("C:\Program Files\ArcGIS\Desktop10.0\ArcToolbox\Toolboxes\Business Analyst Tools.tbx") try: # Acquire extension license arcpy.CheckOutExtension("Business") # Define input and output parameters for the Data Driven Rings tool sStorePath = "C:/temp/sf_store.shp" sIdFld = "STORE_ID" sOutPath = "C:/temp/RingOutput.shp" sRadiusFld = "SALES" # Create data driven rings trade areas arcpy.DataDrivenRings_ba(StorePath, IdFld, "ALL", RadiusFld, "500000", "Miles", OutPath) # Release extension license arcpy.CheckInExtension("Business") except: print arcpy.GetMessages(2)