topic Re: Clipping Large Raster to Polygon Issue in ArcGIS Pro Questions

Clipping Large Raster to Polygon Issue

CameronKoehler — Sun, 16 Mar 2025 21:47:49 GMT

Hello,

I am newer to ArcGIS Pro and do not normally do any editing or clipping to raster data. However, we recently received raster imagery for our county. We need to overlay a surrounding county to our imagery but both our county and the surrounding county has black around the county border in the imagery. I have been trying to clip the actual aerial portions are the raster using a polygon that I quickly made so it would clip the aerial out of the black border. When the clip finishes, it is 390GB with only the color white and no imagery. I have tried going to the Raster Layer tab and clicking Band Combination and trying the Color Infrared and Natural Color options but it does not show anything either.

The original raster is a MrSid format, when that clipping attempt result was white, I converted the format to .tif. The tif clipping is also white.

I have also tried changing the NoData to 256 and 9999 with no changes.

The Aerial data is large, the MrSid is 96GB and the Tiff is 500GB.

I have attached screenshots of the map, clip raster settings, and raster properties.

Any help would be very appreciated!

Polygon to clip toAerial ImageryMr.Sid PropertiesTiff PropertiesClip Raster ParametersClip Raster Environments1Clip Raster Environments2

Re: Clipping Large Raster to Polygon Issue

DanPatterson — Sun, 16 Mar 2025 21:58:16 GMT

it is a "picture"/image so changing the nodata value isn't going to help, I would leave it at 256

How the Snap Raster environment setting works—ArcGIS Pro | Documentation

How the Cell Size Projection Method environment setting works—ArcGIS Pro | Documentation

are two things to consider if a projection is being used during the process. It is too hard with all the scrolling to figure from your images if that is the case.

If not, use

Extract by Mask (Spatial Analyst)—ArcGIS Pro | Documentation

with a raster mask with the same cell alignment and coordinate system of the raster being reduced in size

Re: Clipping Large Raster to Polygon Issue

CameronKoehler — Sun, 16 Mar 2025 22:05:23 GMT

I don't have the license to try the Extract by Mass tool.

For the projection, the polygon, Mr.Sid and Tiff are all NAD 1983 (2011) StatePlane Missouri West FIPS 2403 (Meters). I have also tried running the process without specifying a projection.

Re: Clipping Large Raster to Polygon Issue

DanPatterson — Sun, 16 Mar 2025 22:20:21 GMT

Clip Raster (Data Management)—ArcGIS Pro | Documentation

I would just try unchecking the second last parameter to avoid any changes to the pixel type as indicated in the help, and specify the nodata value used by the input raster

Clipping a raster shouldn't take that long unless some background processing is required to realign cell position and/or output pixel type.

Get a simple rectangular clip to work first, then worry about an non-rectangular clip extent.

Re: Clipping Large Raster to Polygon Issue

MervynLotter — Mon, 17 Mar 2025 13:27:16 GMT

If the above approach does not work, do consider converting it to .tif using the Copy Raster GP tool (not the Clip Raster). Set the output extent in the environment settings.

MrSid imagery is not a raster type that works well in Pro.

Re: Clipping Large Raster to Polygon Issue

CameronKoehler — Fri, 21 Mar 2025 18:36:55 GMT

Simplifying the polygon and changing the symbology to not show the black border worked, thank you!