I would like to remove raster values outside a polygon file. The polygon file is the county boundary. I see that i can use extract by mask or clip but then the output raster image still gets a value called Nodata outside the county boundaries. I would like the removed place (outside county area) to be completely removed from the raster image. I dont want those pixels to show Nodata value when i identify using Idenitfy tool. How can i do that?
My goal is to then convert this raster file into to a text file and then use R to do further analysis. I see there are so much nodata in the text file if i do like this and i dont want NoData in my text file. Is there some way to fix this in ArcMap itself?