https://community.esri.com/t5/arcmap-questions/extract-values-of-raster-within-county-boundary/m-p/1176330#M3773 <P>Hi,</P><P>I would like to remove&nbsp; 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?</P><P>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?&nbsp;</P><P>&nbsp;</P><P>Thank you!</P> Mon, 23 May 2022 08:28:33 GMT Deepa 2022-05-23T08:28:33Z https://community.esri.com/t5/arcmap-questions/extract-values-of-raster-within-county-boundary/m-p/1176330#M3773 <P>Hi,</P><P>I would like to remove&nbsp; 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?</P><P>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?&nbsp;</P><P>&nbsp;</P><P>Thank you!</P> Mon, 23 May 2022 08:28:33 GMT https://community.esri.com/t5/arcmap-questions/extract-values-of-raster-within-county-boundary/m-p/1176330#M3773 Deepa 2022-05-23T08:28:33Z