ExtractBand

Résumé

Creates a raster object by extracting one or more bands from, or reordering the bands in, a multiband raster.

Discussion

For more information about how this function works, see the Extract Bands raster function.

The referenced raster dataset for the raster object is temporary. To make it permanent, you can call the raster object's save method.

Syntaxe

ExtractBand (raster, {band_ids}, {band_names}, {band_wavelengths}, {missing_band_action}, {wavelength_match_tolerance})

Paramètre	Explication	Type de données
raster	The input raster.	Raster
band_ids [band_ids,...]	Extracts bands using the band ID. (La valeur par défaut est None)	Integer
band_names [band_names,...]	Extracts bands using the name of the bands. (La valeur par défaut est None)	String
band_wavelengths [band_wavelengths,...]	Extracts bands using the band wavelengths. (La valeur par défaut est None)	Double
missing_band_action	Specifies the action that will occur when a band within the extract band list is not available. BestMatch —This option will try to find the best available band to use in place of the missing one, so that the function will not fail. Fail —Any mosaic dataset item that is missing a specified band will fail, since the extract band was invalid. (La valeur par défaut est BestMatch)	Integer
wavelength_match_tolerance	Specifies the margin of error when extracting bands using the band_wavelengths method. (La valeur par défaut est None)	Double

Valeur renvoyée

Type de données	Explication
Raster	The output raster.

Exemple de code

ExtractBand example 1

Extracts bands from the input raster using the band_ids method.

import arcpy

out_bands_raster = arcpy.sa.ExtractBand("in_raster.tif", [1, 2])

ExtractBand example 2

Extracts bands from the input raster using the band_wavelengths method.

import arcpy

out_bands_raster = arcpy.sa.ExtractBand("in_raster.tif", band_wavelengths=[500.00])