[GRASS-user] How to remove small closed lines

[Rabotin Michael]

Hi, maybe you can identify your closed lines  with v.to.db command and 
the coordinate of the start point and the end point

v.to.db map=mylines option=end type=line col=coordEnd
v.to.db map=mylines option=start type=line col=coordStart


and tests if the coordinates of the startNode and the EndNode are 
equals, the line is closed and you can tag your lines .
And use after the v.extract command to extract only the lines which are 
not closed.

Hope it can be helpful

Michael


Le 06/11/2013 16:25, grass-user-request at lists.osgeo.org a écrit :
> Date: Wed, 6 Nov 2013 12:59:29 +0000
> From: BLANDENIER Lucien<lucien.blandenier at unine.ch>
> To:"grass-user at lists.osgeo.org"  <grass-user at lists.osgeo.org>
> Subject: [GRASS-user] How to remove small closed lines
> Message-ID:
> 	<84F1DDBD03D55944AA4E63A2FE5EADE5530AB5EB at MAIL-MBX-05.UNINE.CH>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi,
>
> I would like to know how to remove automatically small circles (closed lines, not area). I've tried with v.clean and v.generalize but I just get to remove line which are not closed.
>
>
> Regards
>
>
> Lucien


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INRA <http://www.inra.fr>
*Michael Rabotin*
*Ingénieur d'Etude SIG / GIS Engineer*
michael.rabotin at supagro.inra.fr <mailto:#>
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