[GRASS5] dissolve polygons

ivan marchesini marchesini at unipg.it
Fri Jun 17 06:20:16 EDT 2005


first you have to use r.reclass based on one column attribute to apply
attribute values to category values...
than you can use v.extract -d
later you have to reconnect database table to vector
hope this help....
ivan


Il giorno ven, 17-06-2005 alle 09:54 +0100, Ricardo Armas ha scritto:
> -->  
> 
> Hello everyone,
> 
>  
> 
> Can anyone explain me how I can dissolve polygons, based on
> attributes, when the boundaries are not adjacent.
> 
>  
> 
> Regards,
> 
> Ricardo
> 
>  
> 
> 
> 
> 
> DISCLAIMER: This message may contain confidential information or
> privileged material and is intended only for the individual(s) named.
> If you are not a named addressee and mistakenly received this message
> you should not copy or otherwise dissemenate it: please delete this
> e-mail from your system and notify the sender immediately. E-mail
> transmissions are not guaranteed to be secure or error-free as
> information could be intercepted, corrupted, lost, destroyed, arrive
> late or incomplete, or contain viruses. Therefore, the sender does not
> accept liability for any errors or omissions in the contents of this
> message that arise as a result of e-mail transmissions. Please request
> a hard-copy version if verification is required. Critical Software.
> 
-- 
Ivan Marchesini
Department of Civil and Environmental Engineering
University of Perugia
Via G. Duranti 93/a 
06125
Perugia (Italy)
e-mail: marchesini at unipg.it
        ivan.marchesini at gmail.com
tel: +39(0)755853760
fax: +39(0)755853756








More information about the grass-dev mailing list