Summary
Creates a raster object in which each pixel contains the number of times a set of rasters is less than another raster.
Discussion
For more information about how this function works, see the Less Than Frequency tool.
The referenced raster dataset for the raster object is temporary. To make it permanent, you can call the raster object's save method.
Syntax
LessThanFrequency (value_raster, rasters, {extent_type}, {cellsize_type}, {process_as_multiband})
Parameter | Explanation | Data Type |
value_raster | A value raster that will be referenced by the list of input rasters. | Raster |
rasters | The list of input rasters. | Raster |
extent_type | The method that will be used to compute the extent of the output when the input rasters have different extents.
(The default value is FirstOf) | String |
cellsize_type | The method that will be used to compute the pixel size of the output when the input rasters have different pixel sizes.
(The default value is FirstOf) | String |
process_as_multiband | Specifies how the bands of the input rasters will be processed.
(The default value is False) | Boolean |
Data Type | Explanation |
Raster |
The output raster. |
Code sample
Calculates the number of times a set of input rasters is less than a value raster.
# Import system modules
import arcpy
from arcpy.ia import *
#Set the local variables
value_raster = r"c:\temp\value_raster.tif"
rasters = [r"c:\temp\raster1.tif", r"c:\temp\raster2.tif", r"c:\temp\raster3.tif"]
#Execute
LessThan_raster = LessThanFrequency(value_raster, rasters, "UnionOf", "FirstOf", True)