After running the SDR model, there are significant errors in the results. Specifically, obvious grid lines have appeared in the output, even though my data seems to be intact.
Hi @llx -
One thing that can cause this grid pattern is if you have resampled your DEM using the “Nearest Neighbor” method instead of “Bilinear” or “Cubic”. If you did use “Nearest Neighbor”, go back to your source DEM data and redo the resampling/warping/reprojecting using “Bilinear” and see if that fixes the problem.
You might be able to check this in the model outputs by seeing if the grid pattern appears in the raster intermediate_outputs > flow_direction.tif.
If this doesn’t help, let us know. Also, please tell us which version of InVEST you are using.
~ Stacie
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