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My DEM was generated from contour lines (as well as break lines and point height data), and the contours persist in the DEM despite doing some basic denoising (although i may not have used the optimal settings). This is fine for the typical data analysis I do in QGIS, but would look less than ideal in a printed representation.

Is there a preferred workflow for this type of task?

Or a better way to smooth terrain in general than a basic denoise?

  • Any chance there is LiDAR coverage for your area of interest? If so, you can create your own DEM. – Aaron Dec 18 '18 at 21:50
  • No, unfortunately. – BogBody Dec 19 '18 at 4:54
  • Also, if you are in the US, you should have access to 10m DEMs across vast areas of the US. These should not have contour line relics. – Aaron Dec 19 '18 at 16:07
  • I'm in the US but working on an Italian site. Thanks for the suggestion, though! – BogBody Dec 19 '18 at 16:18

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