[GRASS-user] Re: r.to.vect Produces Too Many Areas

[Margherita Di Leo]

Hi Rich,
> Message: 4
> Date: Mon, 22 Feb 2010 12:14:03 -0800 (PST)
> From: Rich Shepard <rshepard at appl-ecosys.com>
> Subject: [GRASS-user] r.to.vect Produces Too Many Areas
> To: grass-users at lists.osgeo.org
> Message-ID:
> 	<alpine.LNX.2.00.1002221213470.20601 at salmo.appl-ecosys.com>
> Content-Type: text/plain; charset="us-ascii"
>
>    I've done something incorrectly but cannot find what that is.
>
>    Ran r.water.outlet and produced the output basin map. Then I applied
> r.null to that map setting nulls to zeros. 
r,water.outlet produces a map with zeros instead of nulls, so you better 
must apply r.null to set zeros _to_ nulls
> Next I applied r.to.vect to that
> map (with the '-s' option) setting feature to area.
>   
Also, try without '-s'

HTH

Margherita


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

University of Basilicata 
Campus Macchia Romana
85100 - Potenza 
Italy

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