Int (Spatial Analyst)
Resumen
Convierte cada valor de celda de un ráster a un entero mediante truncamiento.
Ilustración
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OutRas = Int (InRas1) |
Uso
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The input values can be either positive or negative.
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If rounding is preferred to truncating, add a 0.5 input raster prior to performing the operation.
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There is a difference between the Int tool and the Round Down tool. For example, given the following two values Int always truncates the number:
- 1.5 becomes 1
- -1.5 becomes -1
while for the same two values, Round Down returns:
- 1.5 becomes 1.0
- -1.5 becomes -2.0
Another difference is that Round Down outputs floating-point values, while Int only outputs integer values.
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The maximum supported range of integer raster values is -2,147,483,648 (minimum size determined by -231) to 2,147,483,647 (maximum size determined by 231 – 1). If Int is used on a floating-point raster which has cells with values outside this range, those cells will be NoData in the output raster.
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Storing categorical (discrete) data as an integer raster will use significantly less disk space than the same information stored as a floating-point raster. Whenever possible, it is recommended to convert floating-point rasters to integer with this tool.
Sintaxis
| Parámetro | Explicación | Tipo de datos |
in_raster_or_constant |
The input raster to be converted to integer. In order to use a number as an input for this parameter, the cell size and extent must first be set in the environment. | Raster Layer | Constant |
Valor de retorno
| Nombre | Explicación | Tipo de datos |
| out_raster |
The output raster. The cell values are the input values converted to integers by truncation. | Raster |
Ejemplo de código
This example converts the input values to integer by truncation.
import arcpy
from arcpy import env
from arcpy.sa import *
env.workspace = "C:/sapyexamples/data"
outInt = Int("gwhead")
outInt.save("C:/sapyexamples/output/outint2")
This example converts the input values to integer by truncation.
# Name: Int_Ex_02.py
# Description: Converts each cell value of a raster to an integer by truncation
# 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
inRaster = "gwhead"
# Check out the ArcGIS Spatial Analyst extension license
arcpy.CheckOutExtension("Spatial")
# Execute Int
outInt = Int(inRaster)
# Save the output
outInt.save("C:/sapyexamples/output/outint")