I'm using the ModelBuilder functionality in ArcGIS, and would like to take a raster that contains 4 bands, clip it with a polygon and then make NDVI from the clipped file. To do that, I need access to the different bands in the raster. In QGIS (where I'm coming from), some libraries don't preserve all 4 bands.
In QGIS, the raster calculator menu gave access to all of the bands, but ArcGIS doesn't seem to. Examples I've found breaks the raster into multiple entities in the model builder and works with those?
In ModelBuilder, how would you go about breaking the raster into its 4 bands?