Greetings I have thwe following vector file:<div><div><a href="http://v.info">v.info</a> map=teste01@Brazil                                         </div><div> +----------------------------------------------------------------------------+</div>
<div> | Layer:           teste01@Brazil                                          |</div><div> | Mapset:          Brazil                                                  |</div><div> | Location:        Brazil                                                    |</div>
<div> | Database:        C:\Brazil                                              |</div><div> | Title:                                                                     |</div><div> | Map scale:       1:1                                                       |</div>
<div> | Map format:      native                                                    |</div><div> | Name of creator: lp                                                      |</div><div> | Organization:                                                              |</div>
<div> | Source date:     Fri Nov 05 12:55:08 2010                                  |</div><div> |----------------------------------------------------------------------------|</div><div> |   Type of Map:  vector (level: 2)                                          |</div>
<div> |                                                                            |</div><div> |   Number of points:       0               Number of areas:      2          |</div><div> |   Number of lines:        0               Number of islands:    2          |</div>
<div> |   Number of boundaries:   2               Number of faces:      0          |</div><div> |   Number of centroids:    0               Number of kernels:    0          |</div><div> |                                                                            |</div>
<div> |   Map is 3D:              No                                               |</div><div> |   Number of dblinks:      0                                                |</div><div> |                                                                            |</div>
<div> |         Projection: Universal Transverse Mercator (zone 0)                 |</div><div> |               N:  9292933.53305786    S:  9107903.14049588                 |</div><div> |               E:   669329.75206612    W:   445299.97933884                 |</div>
<div> |                                                                            |</div><div> |   Digitization threshold: 0                                                |</div><div> |   Comments:                                                                |</div>
<div> |                                                                            |</div><div> +----------------------------------------------------------------------------+</div><div>(Fri Nov 05 12:58:04 2010) Command finished (0 sec)                             </div>
</div><div><br></div><div>And I&#39;m not being able to convert to rast using v.to.rast</div><div><br></div><div>If I do:</div><div>-- v.to.rast --overwrite input=teste01@Brazil output=teste01 type=area            I get:</div>
<div>ERROR: Column parameter missing (or use value parameter)</div><div><br></div><div>-- v.to.rast --overwrite input=teste01@Braziloutput=teste01 use=cat type=area    I get.</div><div>Loading data...</div><div>Area without centroid (may be OK for island)</div>
<div>Area without centroid (may be OK for island)</div><div>Pass 1 of 2:</div><div>Reading areas...</div><div>Reading features...</div><div>Writing raster map...</div><div>Pass 2 of 2:</div><div>Reading areas...</div><div>
Writing raster map...</div><div>Converted areas: 2 of 2</div><div>Converted points/lines: 0 of 0</div><div>v.to.rast complete.</div><div>    With an empty image</div><div><br></div><div>and If If I do this:</div><div><div>
v.to.rast --overwrite input=teste01@Brazil output=teste01 use=val type=area   </div><div>Loading data...</div><div>Area without centroid (may be OK for island)</div><div>Area without centroid (may be OK for island)</div><div>
Pass 1 of 2:</div><div>Reading areas...</div><div>Reading features...</div><div>Writing raster map...</div><div>Pass 2 of 2:</div><div>Reading areas...</div><div>Writing raster map...</div><div>Converted areas: 2 of 2</div>
<div>Converted points/lines: 0 of 0</div><div>v.to.rast complete.</div><div>(Fri Nov 05 13:02:08 2010) Command finished (10 sec)                       </div><div>Also an empty raster</div><div><br></div><div>What am I doing wrong?</div>
<div>Thanks</div><div>Luisa     </div></div><div><br></div><div><br></div>