Elmachi

Hillshading

Discussion created by Elmachi on May 31, 2013
Latest reply on Jun 2, 2013 by Elmachi
Hey there!. I am doing landscape archaeology in eastern Bolivia and I have been working with SRTM to get elevation data for the region. This part of the world is a bit tricky because there is really not that much change in elevation so all DEMs tend to be relatively flat but with lot of noise because of the trees.

Nevertheless SRTM has worked for me really nicely, at least at the biggest scale. At this point I would like to focus a bit more in a specific part of the region and decided to use the japanese/nasa aster data. The DEM looks fantastic but I have been having a lot of troubles trying to generate a decent hillshade.

I am attaching a file that compares the results of both. I have generated both using the same procedure (Project to WGS84 UTM 20S, Hillshade with Z-factor 1, since data is in MTS). You see that the results are dramatically different. Is there any other recommended procedure to generate better results with ASTER? Any help would be greatly appreciated!.

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