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I have a world digital elevation model which has been classified into 5 showing the different heights.

My issue is that viewing and printing this image as it is results in a speckled look due to the highs and lows being so close together.

I would like to know a method which can smooth out the speckled look, I would like to print it at multiple sizes showing world heights.

I am using QGIS

World DEM

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  • The accepted answer here may answer your question.
    – reevesii
    Commented Aug 27, 2018 at 20:01
  • SAGA Gaussian Filter seems to somewhat do a smoothening effect.
    – Hutch
    Commented Aug 31, 2018 at 14:33

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