grass attribute.

GRASS GRASS user
1

I used v.out.ascii command to export grass data that just presented in
x,y coordinate.
Ex..
A 5
    xxxxxx yyyyyy
    xxxxxx yyyyyy
    xxxxxx yyyyyy
    xxxxxx yyyyyy
    xxxxxx yyyyyy
A 4
    xxxxxx yyyyyy
    ....
    ...
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.

Thank you,
Taravudh

2

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

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