[GRASS-user] cells with undefined aspect

[Glynn Clements]

"Carlos \"Guâno\" Grohmann" wrote:

> Speaking of slope/aspect, what do you guys think is the best approach
> with cell of undefined aspect (zero slope)?
> In this all roughness study I am doing, there are some nice methods
> working with vector orientation. So I use aspect - compass azimuth -
> but what about those cells with zero slope? should I make them to have
> what aspect? zero? 360? NULL?

Cells with zero slope should have null for the aspect.

-- 
Glynn Clements <glynn at gclements.plus.com>