topic Re: Erase but for raster in Data Management Questions

Erase but for raster

NiklasNorrthon — Fri, 04 Feb 2011 20:13:33 GMT

I'm looking for a tool similar to Erase_analysis but for raster source instead of a feature class. The clip feature is still vector. That is the opposite of Clip_management (leaving a hole of NoData in the result). I have found three ways to do it so far, but they all seem a little cumbersome, and I'm looking for something simpler.

My possible workarounds are so far:

Convert clip feature class to raster, and call SetNull

Create a feature class from raster extent, call erase with clip feature class, and then Clip Raster
Same as above but ExtractByMask instead of Clip Raster

Is there anyone out there with a better idea on how to accomplish this task?

I Have ArcGIS 10 / ArcInfo with spatial to play with.

Re: Erase but for raster

RobertBerger — Fri, 04 Feb 2011 23:20:37 GMT

Greetings,

Have you looked at the Image Analysis window and the clip / mask buttons? They are very easy to use and give you quick results.
The window is new at 10.0 and can be accessed from windows > Image Analysis.

Robert

Re: Erase but for raster

NiklasNorrthon — Sat, 05 Feb 2011 04:28:21 GMT

Yes I know about that one. Forgot to mention it. It does exactly what I want. My problem is only that this is one little step in a huge model. So I what I need is that functionality but as a toolbox tool, so I can connect it with other tool.

Thanks for mention it anyway.

Re: Erase but for raster

ThomasLaxson — Wed, 12 Dec 2012 18:47:31 GMT

I know this is an old question, but I just encountered a need for this functionality as well, so I thought I'd share my solution:

Use Extract By Polygon, and set the extraction area parameter to 'OUTSIDE'. See: http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/Extract_by_Polygon/009z0000002q000000/

No need to convert between vector and raster and run a series of clips and reclassifications. Just one tool and done.

Re: Erase but for raster

JoshuaTrygg — Thu, 29 Aug 2013 21:59:22 GMT

Additionally this can be achieved using Raster Calculator:

SetNull( Not(IsNull( [EraseRaster] )), [OriginalRaster] )

Note that Not must be replaced with ~ in Arc 10.

This was EXACTLY what I needed! Thanks so much for sharing!

Re: Erase but for raster

ChrisStarbird1 — Thu, 29 Nov 2018 23:09:01 GMT

I don't see who originally posted this solution, but thanks. It saved me from having to brush up on my raster calculator. Thanks.

Re: Erase but for raster

nmasto — Wed, 30 Mar 2022 14:05:51 GMT

I know this is really old, but this answer was perfect, EXCEPT how do you preserve the shape of the original raster? I performed this operation and the "new raster" was clipped by the extent of the "EraseRaster" when really, I'd like the extent of the "OriginalRaster".

Re: Erase but for raster

mTylerH — Wed, 21 Sep 2022 16:55:32 GMT

I think you could just set the extent environment variable to be the extent of the "OriginalRaster" before performing the Raster Calculation and that should solve the issue.

https://desktop.arcgis.com/en/arcmap/latest/tools/environments/output-extent.htm