Available with Spatial Analyst license.
Available with Image Analyst license.
Summary
Performs a Relational less-than-or-equal-to operation on two inputs on a cell-by-cell basis.
Returns 1 for cells where the first raster is less than or equal to the second raster and 0 where it is not.
Illustration
Usage
Two inputs are necessary for this relational evaluation to take place.
The order of inputs is relevant for this tool.
If both inputs are single band rasters, or one of the inputs is a constant, the output will be a single band raster.
If both inputs are multiband rasters, or one of the inputs is a constant, the output will be a multiband raster. The number of bands in each multiband input must be the same.
The tool will perform the operation on each band from one input against the corresponding band from the other input. If one of the inputs is a multiband raster and the other input is a constant, the tool will perform the operation against the constant value for each band in the multiband input.
Syntax
LessThanEqual(in_raster_or_constant1, in_raster_or_constant2)
Parameter | Explanation | Data Type |
in_raster_or_constant1 | The input being tested to determine if it is less than or equal to the second input. A number can be used as an input for this parameter, provided a raster is specified for the other parameter. To specify a number for both inputs, the cell size and extent must first be set in the environment. | Raster Layer; Constant |
in_raster_or_constant2 | The input against which the first input is tested to be less than or equal to. A number can be used as an input for this parameter, provided a raster is specified for the other parameter. To specify a number for both inputs, the cell size and extent must first be set in the environment. | Raster Layer; Constant |
Return Value
Name | Explanation | Data Type |
out_raster | The output raster. The output cell values will be either integer 0 or 1, or NoData if any input cell value is NoData. | Raster |
Code sample
This example performs a Relational less-than-or-equal-to operation on two Grid rasters and outputs the result as an IMG raster.
import arcpy
from arcpy import env
from arcpy.ia import *
env.workspace = "C:/iapyexamples/data"
outLTE = LessThanEqual("degs", "negs")
outLTE.save("C:/iapyexamples/output/outlte.img")
This example performs a Relational less-than-or-equal-to operation on two Grid rasters.
# Name: LessThanEqual_Ex_02.py
# Description: Performs a relational less-than-equal operation on two
# inputs on a pixel-by-pixel basis
# Requirements: Image Analyst Extension
# Import system modules
import arcpy
from arcpy import env
from arcpy.ia import *
# Set environment settings
env.workspace = "C:/iapyexamples/data"
# Set local variables
inRaster1 = "degs"
inRaster2 = "negs"
# Check out the ArcGIS Image Analyst extension license
arcpy.CheckOutExtension("ImageAnalyst")
# Execute LessThanEqual
outLTE = LessThanEqual(inRaster1, inRaster2)
# Save the output
outLTE.save("C:/iapyexamples/output/outlte")
Environments
Licensing information
- Basic: Requires Image Analyst or Spatial Analyst
- Standard: Requires Image Analyst or Spatial Analyst
- Advanced: Requires Image Analyst or Spatial Analyst