I have a DEM SRTM that I classify using Spatial Analyst Tools > Reclass > Reclassify.

The result is box shaped so I go to Layer Properties > Display and choose cubic convolution. The result is smooth (not box shaped).

Next I convert to polygon using Conversion Tools > From Raster > Raster to Polygon choosing Simplify polygon. Then the polygon output is boxshaped.

So how do I create smooth polygons like from cubic display raster ?

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