Clip a raster using the Clipping Geometry option using ArcPy not working

Question

I am trying to automate the process of clipping rasters of scanned maps by following the recommendation found here: How To: Clip a raster using the Clipping Geometry option. The rasters are being clipped to the envelope, but not the shape as pixels outside of the polygon are still persisting. The rasters and the feature class are in the same coordinate system. My footprints are all stored in same feature class with a field 'RasterFile' storing the raster name (e.g. 'raster01.tif'). I have tried creating a feature layer with a query and using Select analysis to select out the footprint for a single raster (see code below). Everything processes, but the shape clip is not honored. When I just run the Raster Clip tool manually, the clip honors the shape. Any ideas for what I may be missing? # Paths have been generalized for example purposes import os import arcpy inputFolder = r'..\RasterFolder' footprints = r'..\GDB.gbb\ScanFootprints' # Polygon feature class # Create a list of rasters; Output will look like: ['raster01.tif', 'raster02.tif', ...] arcpy.env.workspace = inputFolder processRasters = arcpy.ListRasters() # Iterate each raster to clip for raster in processRasters: inputRaster = os.path.join(inputFolder, raster) # Feature layer method arcpy.MakeFeatureLayer_management(footprints, "footprint", "RasterFile = '" + raster + "'") arcpy.Clip_management(inputRaster, '#', outputRaster, "footprint", '#', 'ClippingGeometry') # Select Analysis method arcpy.Select_analysis(footprints, footprints + '_temp', "RasterFile = '" + raster + "'") arcpy.Clip_management(inputRaster, '#', outputRaster, footprints + '_temp', '#', 'ClippingGeometry')‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

AaronZuspan1 · Accepted Answer

Sorry to revive an old question, but in case anyone else is having this same issue and stumbles on this thread (like I just did), here's the solution: NoData has to be defined as "0" instead of "#". Using the code above, it should be:

arcpy.Clip_management(inputRaster, '#', outputRaster, footprints + '_temp', '0', 'ClippingGeometry')

That will allow the tool to clip to the polygon shape instead of the bounding rectangle.