[GRASS5] Layers Clarification

[twiens]

----- Original Message Follows -----
From: "Radim Blazek" <radim.blazek at gmail.com>
To: twiens at interbaun.com
Cc: GRASS5 <grass5 at grass.itc.it>
Subject: Re: [GRASS5] Layers Clarification
Date: Mon, 6 Mar 2006 17:51:59 +0100


> The possibility to keep in a database the relation between
> geometry objects in a map and more tables/records was
> considered during the development of  GRASS 6.0. It does
> not appear to be better solutin because all the geometry
> processing is done in files. Example:  Say that we have
> one layer with 2 loverlapping lines linked to 2 records in
> one table.
>             1
> +-----------------------+        2
>                 +-------------------------+
> 
> Now we want to clean data and remove the duplicated part,
> we run v.clean tool=break,rmdupl result (in current
> implementation):
>          1          1,2       2
>  +--------------+--------+----------------+
> 

Are you indicating by this example that within a single
layer a geographic object can have more than one link to a
table, or is the result of this operation two layers?

T
-- 
Trevor Wiens