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Is there an ArcGIS function to sample x% where x lies between 0 and 100, of a raster?

I do not want point sampling and ArcGIS functions seem to focus on point sampling.

For ArcGIS, I use version 10.2

--EDIT: Desired output: This output raster will have x% of cells selected randomly

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  • I'm not exactly sure what you have in mind as "raster sampling". Do you mean raster resampling? Do you want statistics on raster cell values within polygons? – Jae Jul 20 '17 at 14:14
  • What's your desired output, a vector of values from the sampled cells? – alaybourn Jul 20 '17 at 17:20
  • no, I just want a raster as output. This output raster will have x% of cells selected randomly – user1186 Jul 20 '17 at 17:58
  • Please use the edit button beneath your question to revise it with any requested clarifications. – PolyGeo♦ Jul 20 '17 at 20:31
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I tested following on raster called "DEM", which has 79540 cells with data and a lot of cells with NO DATA:

arcpy.CreateRandomRaster_management("../SCRATCH", INT_R", "UNIFORM 0.0 1.0")
arcpy.gp.RasterCalculator_sa('Con("INT_R" <= 0.50,"DEM")',"..SCRATCH/percent")

Output raster has 39955 cells with data. The ratio 39955/79540 = 0.502, i.e. result contains 50% of cells from original raster

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