Using Reclassify in Python

Question

Hi,

I have one raster and would like to transform all values between -0,9 - 0 like 1 value, and 0 - 0,9 like NoData.

How can I to this in python?

Thank´s

ModyBuchbinder · Answer

If you want ESRI to set the classes for you using some good algorithms you can try Slice  https://pro.arcgis.com/en/pro-app/latest/tool-reference/spatial-analyst/slice.htm

Hayden Welch · Answer

Have you used the arcpy.ddd.Reclassify tool yet? From the docs: import arcpy # Set Environment arcpy.env = r"" # Set local variables inRaster = "landuse" field = "VALUE" remapString = "1 9;2 8;3 1;4 6;5 3;6 2;7 1" outRaster = "C:/output/reclass3d" # Execute Reclassify arcpy.ddd.Reclassify(inRaster, field, remapString, outRaster, "DATA") In your case you would do something like this: import arcpy arcpy.env = r"" remap = "-0.9 0 1" raster = r"" field = "" out_raster = r"" arcpy.ddd.Reclassify(raster, field, remap, out_raster, "NODATA") The "NODATA" flag at the end will write any values outside the provided remap range with NoData instead of the original values, so in your case you only define the remap for the lower end and just don't map the values over 0

danretired · Answer

Reclassify (Spatial Analyst)—ArcGIS Pro | Documentation

See the code examples for the spatial analyst extension.