I would like to create a nice shaded relief for France using SRTM3 data. Most of the threads on the subject are from awhile ago, when ArcMap was not able to import these without changing the file extension.
Now, it seems, ArcMap can import the .hgt files just fine. The problem is that the value for elevation is set at 32767 to - 32767. If I change the symbology settings and set the stretch value to standard deviation. This sets the values much lower and you can see the elevation differences.
A complete set of images is present at this imgur album showing the comparison, stretch setting, and final difference.
This creates two more problems: - How might I do this on a mass scale? I've searched for tools and unfortunately most conversion custom toolkits seem to be inaccessible. - Each hgt file seems to be shaded differently, due to the changing of the stretch value to standard deviation, as seen below:
I apologize if this is something that has been covered before. I am still relatively new to the world of Cartography and GIS so there may be a simple tool that I should be using.
Many thanks for any guidance on the subject.