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Recreating a Slope raster

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03-19-2026 06:49 AM
MatthewReese
by
New Contributor
‎03-19-2026 06:49 AM

I have a raster, Slope_percentage, that I need to extract a shape of a county from. The shape extent is the same as my Slope_RC and I also have a vector polygon shape. Both raster's information is in the images below. The Slope_RC has a projected coordinate system NAD 1983 UTM Zone 12N while the tiff, Slope_percentage is a Geographic Coordinate System NAD 1983. I am using the Slope_RC as the snap raster when I extract from mask. The main issue is also the slope rc has been reclassified into 1, 2, and 3. I need to try and recreate the values break that are within it. I don't know the breaks so I am just visually matching. The Slope_percent tiff values are 3.8345069697243E-06 to 855.98364257812. Any guidance would be appreciated. I've tried to reproject the Slope_percentage. Then Extract from Mask and then reclassify but am not getting anywhere.

slope_percent.PNGSlope_RC.PNG

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2 Replies
ToddW_stl
by Esri Contributor
Esri Contributor
‎03-23-2026 05:58 PM

@ArthurCrawford may be able to help?

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ArthurCrawford01
by
Occasional Contributor
‎03-24-2026 09:27 AM

I would add a field to the county polygon (8bit Integer) and calculate a field to 0.   Use Polygon to Raster using that field. Be sure to set the pixel size to your current percent slope raster.  Use the Plus Raster Function to your input percent slope and raster county image, this will get rid of the areas outside, and a Remap Raster Function in the chain on the output to the different ranges of percent slope.

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