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I have a elevation raster (1 arc second) downloaded from USGS site. Before adding it to ArcMap I changed the display units to meters.The projection system for this raster is GCS_1983. When I use the slope tool under the spatial analyst tool , it is unable to create the slope layer.The data type for the image is floatng.What could be possibly be wrong here.
Even after reprojecting it I get the same error.