DEM Artefacts

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03-05-2015 12:49 PM
PaulHeersink
New Contributor III

I have a collection of data points from which I am trying to generate a DEM and, ultimately, a hillshade for use as a backdrop in a map. Whichever way I try to process it (using Topo to Raster) I get artefacts where the points are located. See the attached example:Capture2.JPG

Any ideas what might be causing this?

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12 Replies
RajinderNagi
Esri Contributor

Dan, It seems the article you referred is from tech support and I added comment for them to update this for 10.x.

For any continuous surface, bilinear or cubic re-sampling should be used instaed of default nearest neighbor to avoid artifacts (such as stair case).

DanPatterson_Retired
MVP Emeritus

thanks for updating the thread with the information... still no update but the link will be useful because of the image documentation

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PROBERT68
Frequent Contributor

Does the DEM you have are in known projection rather than geographic coordinate systems ? I'd check on that ..

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