[GRASS-user] Distance map with defined path

[Margherita Di Leo]

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
Fax: +39-0971205160
E-mail: dileomargherita AT gmail DOT com
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URL: http://www.difa.unibas.it/A_Manager_PP.do?azione=visualizzaHomePage&id=106