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Oct 7, 2014 at 16:12 history edited GNG85 CC BY-SA 3.0
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Jun 10, 2014 at 17:32 comment added whuber This is not the TRI described in the question. In fact, it cannot be thought of as measuring "ruggedness" at all, because it changes when you merely shift the vertical datum. For instance, your TRI of a 3x3 neighborhood with values (1,2,...,9) would be sqrt(9^2-1^2)=8.9, but adding 100 to the values (which just changes the datum without changing the shape of the surface at all) gives sqrt(109^2-101^2)=41.
Jun 10, 2014 at 16:23 history edited Paul CC BY-SA 3.0
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Mar 6, 2014 at 17:48 history edited GNG85 CC BY-SA 3.0
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S Mar 6, 2014 at 17:29 review Late answers
Mar 6, 2014 at 18:58
S Mar 6, 2014 at 17:29 review First posts
Mar 6, 2014 at 19:20
Mar 6, 2014 at 17:09 history answered GNG85 CC BY-SA 3.0