Multiple Ring Buffer (Analysis)

Summary

Creates multiple buffers at specified distances around the input features. These buffers can optionally be merged and dissolved using the buffer distance values to create non-overlapping buffers.

Illustration

Usage

• The Buffer Unit parameter is ignored if the Input Features do not have a defined spatial reference.

• If the Dissolve Option ALL is used, the output feature class will contain one feature for each distance specified in the Distances parameter (all buffers the same distance from the Input Features will be dissolved).

• The tool creates intermediate data which is written to the location specified in the Scratch_workspace environment setting. If the Scratch workspace environment is not set, the temporary data is written to the location defined by the TEMP system variable.

• This tool is a Python script tool. The script can be viewed by right-clicking the tool and selecting Edit.

• For more information about buffers, see the Buffer tool.

Syntax

MultipleRingBuffer_analysis (Input_Features, Output_Feature_class, Distances, {Buffer_Unit}, {Field_Name}, {Dissolve_Option}, {Outside_Polygons_Only})

Parameter	Explanation	Data Type
Input_Features	The input point, line, or polygon features to be buffered.	Feature Layer
Output_Feature_class	The output feature class that will contain multiple buffers.	Feature Class
Distances [Distances,...]	The list of buffer distances.	Double
Buffer_Unit (Optional)	The linear unit to be used with the Distance values. If the units are not specified, or entered as 'Default', the linear unit of the input features' spatial reference is used. If the Buffer Unit is specified as 'Default' and the Output Coordinate System geoprocessing environment has been set, its linear unit will be used.	String
Field_Name (Optional)	The name of the field in the output feature class that stores the buffer distance used to create each buffer feature. If no name is specified, the default field name is 'distance'. This field will be of type Double.	String
Dissolve_Option (Optional)	Determines if buffers will be dissolved to resemble rings around the input features. ALL —Buffers will be rings around the input features that do not overlap (think of these as rings or donuts around the input features). The smallest buffer will cover the area of its input feature plus the buffer distance, and subsequent buffers will be rings around the smallest buffer which do not cover the area of the input feature or smaller buffers. All buffers of the same distance will be dissolved into a single feature. This is the default. NONE —All buffer areas will be maintained regardless of overlap. Each buffer will cover its input feature plus the area of any smaller buffers.	String
Outside_Polygons_Only (Optional)	Valid only for polygon input features. FULL —Buffers will overlap or cover the input features. This is the default. OUTSIDE_ONLY —Buffers will be rings around the input features, and will not overlap or cover the input features (the area inside the input polygon will be erased from the buffer).	Boolean

Code Sample

MultipleRingBuffer Example (Python Window)

The following Python window script demonstrates how to use the MultipleRingBuffer tool in immediate mode.

import arcpy
from arcpy import env
env.workspace = "C:/data/airport.gdb"
arcpy.MultipleRingBuffer_analysis("schools", "c:/output/output.gdb/multibuffer1", [10,20,30],
                         "meters", "", "ALL")

MultipleRingBuffer Example 2 (stand-alone script)

The following stand-alone script demonstrates how to use the MultipleRingBuffer tool.

# Name: MultipleRingBuffer_Example2.py
# Description: Create multiple buffers for the input features
# Author: ESRI
 
# Import system modules
import arcpy
from arcpy import env
 
# Set environment settings
env.workspace = "C:/data/airport.gdb"
 
# Set local variables
inFeatures = "schools"
outFeatureClass = "c:/output/output.gdb/multibuffer1"
distances = [10,20,30]
bufferUnit = "meters"
 
# Execute MultipleRingBuffer
arcpy.MultipleRingBuffer_analysis(inFeatures, outFeatureClass, distances, bufferUnit, "", "ALL")

Environments

Default Output Z Value, M Resolution, M Tolerance, Output XY Domain, Output Coordinate System, Extent, Current Workspace, Geographic Transformations, Scratch Workspace, Output has M values, Output has Z values, Output Spatial Grid 1, 2, 3, XY Resolution, XY Tolerance, Z Resolution, Z Tolerance

Licensing Information

ArcView: Yes

ArcEditor: Yes

ArcInfo: Yes