AnsweredAssumed Answered

How to Extract Raster by Polygon without "No Data" cells?

Question asked by matthew_faruolo on May 31, 2016
Latest reply on Jun 1, 2016 by matthew_faruolo

Apologies if this is a simple question, but it's the first time I've really needed to do this. I'm using ArcMap 10.2.

I have a large raster mosaic I created using four image tiles, but the extent area for my project (which falls at the intersection of the four tiles) is only about 25% of the full image. I am trying to extract a new raster dataset (.tif) based on a polygon I created.

 

Here's the problem: After looking at several tools (Clip, Extract Raster), I find that the *entire* extent area of the original input raster is preserved as "No Data" cells for the areas that fall outside my polygon mask. To enhance performance and reduce file size, I would simply like to create a smaller raster "without the baggage of the original extent". Ideally, my end result would be a reduced-size, reduced-extent raster based on the satellite view shown below.

 

Can anyone tell me which tool to use in order to accomplish this? Or perhaps I am not selecting the correct settings in the tools I used? In the image below, the black area represents the full-extent raster, and the satellite imagery is what I want to export as a stand-alone raster. Everything I've tried still preserves the original extent in the output file. Any help would be appreciated! Thanks!

Attachments

Outcomes