Trying to understand the difference between the NoData and Background values. For instance, the 'Copy Raster' tool (just as an example) allows to specify both as optional parameters - should I choose one or another? Or may be both? I mean, normally people tend to remove those values from display by setting them to No Color in the Raster layer display properties. Thus, why would I want to distinguish those if they are useless anyways. Or may be not - do you ever use these in your analysis? Furthermore, how does ArcMap handle those by default - does it hide NoData; does it display background? Just trying to understand this topic better. So, any thoughts, ideas, and opinions are welcome!