Synthèse
Creates a raster object where 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.
Syntaxe
LessThanFrequency (value_raster, rasters, {extent_type}, {cellsize_type}, {process_as_multiband})
Paramètre | Explication | Type de données |
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.
(La valeur par défaut est 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.
(La valeur par défaut est FirstOf) | String |
process_as_multiband | Specifies how the bands of the input rasters are processed.
(La valeur par défaut est False) | Boolean |
Type de données | Explication |
Raster |
The output raster. |
Exemple de code
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)
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