RadiusVariable
Summary
Defines a variable search radius by specifing a maximum distance and the number of points for analysis. If the number of points cannot be satisfied within that maximum distance, a smaller number of points will be used.
Syntax
Parameter | Explanation | Data Type |
numberOfPoints |
The numberOfPoints is an integer value specifying the number of nearest input sample points to be used to perform the interpolation. (The default value is 12) | Long |
maxDistance |
The maxDistance specifies the distance, in map units, by which to limit the search for the nearest input sample points. The default value is the length of the extent's diagonal. If the number of points cannot be satisfied within that distance, a smaller number of points will be used. | Double |
Properties
Property | Explanation | Data Type |
numberOfPoints (Read and Write) |
The numberOfPoints is an integer value specifying the number of nearest input sample points to be used to perform the interpolation. | Long |
maxDistance (Read and Write) |
The maxDistance specifies the distance, in map units, by which to limit the search for the nearest input sample points. If the number of points cannot be satisfied within that distance, a smaller number of points will be used. | Double |
Code Sample
Demonstrates how to create a RadiusVariable class and use it in the Kriging tool within the Python window.
import arcpy from arcpy import env from arcpy.sa import * env.workspace = "C:/sapyexamples/data" myRadius = RadiusVariable(12) outKriging = Kriging("ca_ozone_pts.shp", "ELEVATION", "SPHERICAL", 2000, myRadius, "C:/sapyexamples/output/krigvpradiusv") outKriging.save("C:/sapyexamples/output/krigradvar")
Calculates a surface with the Idw interpolation tool using the RadiusVariable class.
# Name: RadiusVariable_Ex_02.py # Description: Uses the RadiusVariable object to execute IDW 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 inFeature = "ca_ozone_pts.shp" # Create the Radius Variable numberOfPoints = 5 maxDistance = 200000 searchRadius = RadiusVariable(numberOfPoints, maxDistance) # Check out the ArcGIS Spatial Analyst extension license arcpy.CheckOutExtension("Spatial") # Execute IDW outIDWRadVar = Idw(inFeature, "elevation", 2000, 3, searchRadius) # Save the output outIDWRadVar.save("C:/sapyexamples/output/idwradvar")