[GRASS-user] extract drainage in the right direction

[Marcello Benigno]

Hi All,

There is some methodology where it is possible extract the drainage network
and maintain the correct graph orientation? I verified that the operation
of the extracted drainage with "flow accumulation" command and converted to
vector does not represent the correct way that water runs along the river,
some pieces are in the opposite direction.

Thanks in advance,
-
*Marcello Benigno B. de Barros Filho*
Prof. do Curso Superior de Tecnologia em Geoprocessamento - IFPB
Mestre em Ciências Geodésicas e Tecnologias da Geoinformação - UFPE
http://profmarcello.blogspot.com
http://about.me/marcello.benigno
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