I am observing a checkerboard pattern when processing slope from the Copernicus 30m DEM. I have accurately calculated the Z-factor for my region, and I have attempted the analysis using R, ArcGIS 10.4, ArcGIS Pro, and QGIS. Since the issue persists across all platforms, it is likely that the problem lies with the DEM itself rather than with my processing methods.
Someone Please help?
If you extract this data from GEE, the problem arises. Choose Opentopography for data accessing.
Could you please:
- Confirm that when downloading data from the official Copernicus site, the problem does not occur.
- Provide the characteristics of the DEM showing issues:
Thank you.
Maybe the issue is originate to the DEM, likely resulting from tiling or resampling processes. Try to apply a smoothing filter to the DEM (e.g., mean or Gaussian) before calculating slope. This often reduces or eliminates the checkerboard pattern.
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