I'm fairly new to ArcGIS and I get into trouble extracting a single band layer from a raster image .img in ArcMap that I want to use after in zonal statistics. So far, all help I found is to do the operation in the other way around and merge bands and some explanation by using the python code. But I would like to use ArcMap interface.
I tried to create a single layer from ArcCatalog and import it to ArcMap but I get a layer and not a raster. I also tried to import my image.img in ArcMap but then I don't find anything to extract only a specific band.