topic Re: Extract one band from 3 band raster in Data Management Questions

Extract one band from 3 band raster

StephanieSnider — Mon, 27 Jun 2011 16:59:50 GMT

ArcGIS 10 SP2, Windows XP

I know there must be a simple solution to this, but I haven't found it yet. Is there a way to extract one band from a 3-band raster and output that to a new one-band raster dataset? I see there is a tool for composite bands, for making several rasters into one raster. But how to you go the other direction?

Re: Extract one band from 3 band raster

RobertBerger — Mon, 27 Jun 2011 17:16:37 GMT

Greetings,

Yes, the composite bands tool will accomplish this. You can drill into the raster and input the desired band to the tool.

Robert

Re: Extract one band from 3 band raster

StephanieSnider — Mon, 27 Jun 2011 17:30:05 GMT

Oh, I see. You have to select the band within the raster and not the raster itself. Got it. I can use the copy Raster tool. Thanks!

Re: Extract one band from 3 band raster

StephanieSnider — Mon, 27 Jun 2011 23:31:27 GMT

In case anyone needs to do this in batch mode like myself, here's some python to help:

# Import arcpy module
import arcpy

origin = "E:\\SDEstage\\Unloaded\\3-band\\"
arcpy.env.workspace = origin
RasterList = arcpy.ListRasters()
RasterList2 = []

# Remove the ".tif" in order to create raster name that will store in FGD
for x in range(len(RasterList)):
    [INDENT]RasterList2 = RasterList2 + [RasterList[:-4]][/INDENT]

for i in range(len(RasterList2)):
    [INDENT]# Set Tif and Band #
    TiftoLoad = origin + RasterList2 + ".tif\\Band_1"
    # Since these tif file names begin with a number, add letter to beginning in order to store in FGD.
    dest = "E:\\SDEstage\\Rasters.gdb\\A" + RasterList2
    # Copy raster
    arcpy.CopyRaster_management(TiftoLoad, dest, "", "", "", "NONE", "NONE", "")
    print "Converted " + RasterList2[/INDENT]

Re: Extract one band from 3 band raster

ScottRoberts — Mon, 11 Mar 2013 16:55:59 GMT

How do you select the band within the raster and not the raster itself?

Re: Extract one band from 3 band raster

FionaGregory — Fri, 02 May 2014 15:15:37 GMT

Here's one way:
In ArcCatalog - Contents tab - click on the name of the raster and it will drill down to the individual bands. Drag each band from ArcCatalog into the Composite Bands tool.