[GIS] How to reclassify a raster to floating point values

arcgis-desktopfloating pointrasterspatial-analyst

I have a raster of landuse values that I need to reclassify into pollution concentration values. I have the pollution values in a separate table. They are decimal values (ex. 0.0056), and my landuse values are integers 1 through 6. I have a table mapping the landuse values to the pollution values.

I tried using the Reclass By Table tool, setting my pollution values as the "Output value field", but the tool description says that this field must be an integer field. How can I reclassify the values into decimal values? I feel like I must be missing a much easier, alternate solution.

My goal is to have a pollution concentration raster that I can use later in further calculations.

Best Answer

  1. Make sure your raster of landuse values has an attribute table
  2. Add a join between landuse attribute table and pollution concentration table
  3. Use the Lookup (Reclass) tool to create a new raster from the landuse raster with the values from the joined pollution concentration field.
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