[GRASS-user] Looking for a tool to allocate cells to its nearest neighbor

Lluís Vicens lluis at sigte.udg.es
Wed Jan 28 10:30:00 EST 2009


Hi,

I've been searching a tool like 'ALLOCATE'(Idrisi) in GRASS, but I can't 
find it. There is any kind of tool like that in GRASS? Which is the best 
way to perform this kind of operation?

Allocate in Idrisi:
> ALLOCATE performs spatial allocation based on a distance or 
> cost-distance image derived from DISTANCE, COST,
> VARCOST or DISPERSE. For example, if the distance surface were 
> calculated from a set of health centers, ALLO-
> CATE could be used to assign each cell to its nearest health center. 
> The final result of ALLOCATE would be an image
> with identifiers indicating to which health center each cell is 
> assigned. The result from ALLOCATE is identical to that of
> THIESSEN where simple Euclidean distance is used. However, if cost 
> distance is used, the result may be quite different.
Thanks in advance!
Lluís

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