[GRASS-user] Distance map with defined path

[Margherita Di Leo]

Hi Milton,
Thank you for answering,
I corrently use r.watershed to obtain my flow direction matrix 
(drainage). I'm searching for a module in which I can put this 
'drainage' in input, and a raster (or vector) with the river network in 
input, to obtain in output a matrix in wich in each cell there is the 
distance from the river, calculated on the basis of the path defined in 
'drainage'.

Thank you
m.

Milton Cezar Ribeiro wrote:
> Hi Margherita,
>  
> give a look at
> r.watershed
> r.terraflow
> r.flow
> Good luck,
>  
> milton
> 2009/7/10 Margherita Di Leo <diregola at gmail.com 
> <mailto:diregola at gmail.com>>
>
>     Hi Jachym,
>
>     Thank you very much for your answer.
>
>     I think I was not very clear in explaining my problem. I have to
>     calculate distance from a line, but the distance has to be
>     calculated *following a path*, defined by a matrix of direction,
>     as a 'flow direction' in hydrology.  It would be a very useful
>     hydrological tool.
>
>     Cheers
>
>     m.
>
>
>
>     Jachym Cepicky wrote:
>
>         Hi,
>
>         would [1] help ?
>
>
>         [1]
>         http://grass.osgeo.org/grass64/manuals/html64_user/r.grow.distance.html
>
>         Jachym
>
>         On Thu, Jul 09, 2009 at 03:29:40PM +0200, Margherita Di Leo wrote:
>          
>
>             Hi List!
>
>             I was wondering if there is a way to obtain a (raster) map
>             of distances  from a point or a line, in which the path is
>             defined by a map (i.e. a  flow direction).
>             It would be very useful for me!
>
>             Thank you in advance.
>
>             Cheers
>             m.
>
>                
>
>

-- 
Eng. Margherita Di Leo
Ph.D. Student 
Methods and Technologies for Environmental Monitoring
Department of Environmental Engineering and Physics (DIFA)

University of Basilicata 
Campus Macchia Romana
85100 - Potenza 
Italy

Office: +39-0971205363
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E-mail: dileomargherita AT gmail DOT com
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