[GRASS-user] r.shade.relief: Results Not As Expected

[MS]

Have you tried a different azimuth?  Sometimes certain values can  
cause features to look inverted for given terrain conditions.

Mark

On Jan 4, 2010, at 8:32 PM, Rich Shepard <rshepard at appl-ecosys.com>  
wrote:

> On Tue, 5 Jan 2010, Glynn Clements wrote:
>
>> Run r.slope.aspect on the interpolated map, and check for grid-like
>> artifacts.
>
> Glynn,
>
>  Did this. Yes, there is a grid-like appearance to the resulting map.
>
>> How good is the underlying data? If it's noisy, it may need to be
>> filtered before interpolating.
>
>  How do I check for noisy data? I have all the basic information  
> about the
> source data and derived maps.
>
>> Also: which version of GRASS are you using?
>
>  6.5svn.
>
> Thanks,
>
> Rich
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