grass attribute.

[Michel Wurtz - LTE]

Taravudh Tipdecho wrote:
> 
> I used v.out.ascii command to export grass data that just presented in
> x,y coordinate.
[snip...]
> How should I get the attribute of this vector file from grass? Where is
> it? and How to link these attributes with x,y coordinate in case of
> polygon data.

vector files contain only geometry of lines and a letter for the type
(A = Area, L = Lines).  The attributes are (in ascii) in the dig_att
directory (same name as vector file) and look like :

A xxxxxx yyyyyy nn

where xxxxx and yyyyyy are the coordinates of a point inside the
polygon and nn is the attribute.

When you have more attributes, they are in the dig_cats directory
(same name as vector file)and look likes a raster cat file
(list of couples att_number:cat_number

-- 
Michel Wurtz    ENGEES - Laboratoire Territoires & Environnement
                1, quai Koch - BP 1039, F-67070 STRASBOURG cedex
                Tel: +33 03.88.24.82.45  Fax: +33 03.88.37.04.97