Subset Bands function

Overview

The Subset Bands function allows you to extract a subset of bands using ranges or lists. This function supports both multispectral and hyperspectral images and maintains the same band order as the input.

Notes

The Combination parameter is used to specify the bands to extract. The bands are entered as a space-delimited list and can be specified as ranges of bands. For example, when specifying a subset using the ID option for the Method parameter, a value of 20-50 60-100 200 will extract band IDs between (inclusive) 20 and 50, 60 and 100, and a band with an ID of 200.

When specifying the Combination parameter value using the Wavelength option for the Method parameter, all bands within the wavelength range will be extracted.

When specifying bands by wavelength, the units—such as microns or nanometers—are the same as the input units.

Subsets using the Band Names option must be a list of individual names delimitated by a space, such as band_1 band_2 band_3. Range is not supported for the Band Names option.

You can use the Subset Bands function before other functions to control which bands are used as input in the next function.

Parameters

Parameter	Description
Raster	A raster, multispectral or hyperspectral image from which bands will be extracted.
Method	The method that will be used to extract the subset bands: Band Names—Use band names to identify the subset bands for extraction. Band Wavelengths—Use band wavelengths on the electromagnetic spectrum to identify the subset bands for extraction. Band IDs—Use the band designation or sequence number to identify the subset bands for extraction.
Combination	Select the bands to extract based on the Method parameter option used. The type ranges or values, separated by a space, that specify the bands to extract. Use the Minimum and Maximum controls to define the range of bands, and click the button to add the range to the Combination box.
Missing Band Action	Specify the action that will occur when a band in the extract band list is not available. Best Match—The best available band is used in place of the missing band based on wavelength. Fail—If the input dataset is missing any band specified in the Combination parameter, the function will fail.