Corridor (Spatial Analyst)

Available with Spatial Analyst license.

Summary

Calculates the sum of accumulative costs for two input accumulative cost rasters.

Legacy:

This tool is deprecated and will be removed in a future release.

The Least Cost Corridor tool provides enhanced functionality or performance.

Learn more about creating a corridor

Usage

• While any two rasters can be used for the input, to obtain a meaningful result they should be unaltered accumulative cost output rasters.

• The order of the two inputs is irrelevant.

• When the output raster format is .crf, this tool supports the Pyramid raster storage environment. Pyramids will be created in the output by default. For any other output format, this environment is not supported, and pyramids will not be created.

• See Analysis environments and Spatial Analyst for additional details on the geoprocessing environments that apply to this tool.

Parameters

Dialog

Label	Explanation	Data Type
Input cost distance raster 1	The first input distance raster. It should be an accumulated cost distance output from a distance tool such as Cost Distance or Path Distance.	Raster Layer
Input cost distance raster 2	The second input distance raster. It should be an accumulated cost distance output from a distance tool such as Cost Distance or Path Distance.	Raster Layer

Return Value

Label	Explanation	Data Type
Output raster	The output corridor raster. The output raster is of floating-point type.	Raster

Python

Corridor(in_distance_raster1, in_distance_raster2)

Name	Explanation	Data Type
in_distance_raster1	The first input distance raster. It should be an accumulated cost distance output from a distance tool such as Cost Distance or Path Distance.	Raster Layer
in_distance_raster2	The second input distance raster. It should be an accumulated cost distance output from a distance tool such as Cost Distance or Path Distance.	Raster Layer

Return Value

Name	Explanation	Data Type
out_raster	The output corridor raster. The output raster is of floating-point type.	Raster

Code sample

Corridor example 1 (Python window)

The following Python Window script demonstrates how to use the Corridor tool.

import arcpy
from arcpy import env
from arcpy.sa import *
env.workspace = "C:/sapyexamples/data"
outCorr = Corridor("costraster", "focalcost.tif")
outCorr.save("c:/sapyexamples/output/corridor")

Corridor example 2 (stand-alone script)

Calculate a wildlife corridor between two known protected areas.

# Name: Corridor_Ex_02.py
# Description: Calculate a potential wildlife corridor between 
#              two known protected areas.
# 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
inCostRaster = "costdist01"
nextCostRaster = "cotdist02"

# Execute Corridor
outCorridor = Corridor(inCostRaster, nextCostRaster) 

#Limit the corridor to a threshold to show a potential corridor
corridor = Con(outCorridor, 1, 0, "VALUE < 100")

# Save the output 
outCorridor.save("C:/sapyexamples/output/costout")

Environments

Auto Commit, Cell Size, Cell Size Projection Method, Current Workspace, Extent, Geographic Transformations, Mask, Output CONFIG Keyword, Output Coordinate System, Pyramid, Scratch Workspace, Snap Raster, Tile Size