[GRASS-user] i.pr: screen does not show map

[Daniel McInerney]

I'm under the impression that i.pr.training
requires a point vector map, but I'm not 100%
sure and haven't tested a polygon vector file?
Perhaps, you could use the polygon centroids
to extract your training features or else
digitise a point vector map.

Regards,
Daniel.





Moritz Lennert wrote:
> On 28/11/07 14:25, Daniel McInerney wrote:
>> Hi Moritz,
>> What does v.info training give? 
> 
> 
>  > v.info training
> 
> +----------------------------------------------------------------------------+ 
> 
>  | Layer:           training        |
>  | Mapset:          user1        |
>  | Location:        imagery60        |
>  | Database:        /home/mlennert/GRASS/DATA        |
>  | Title:        |
>  | Map scale:       1:1        |
>  | Map format:      native        |
>  | Name of creator: mlennert        |
>  | Organization:        |
>  | Source date:     Thu Nov 22 16:22:31 2007        |
> 
> |----------------------------------------------------------------------------| 
> 
>  |   Type of Map:  vector (level: 2)        |
>  |        |
>  |   Number of points:       0               Number of areas:      14 
>        |
>  |   Number of lines:        0               Number of islands:    14 
>        |
>  |   Number of boundaries:   14              Number of faces:      0 
>        |
>  |   Number of centroids:    14              Number of kernels:    0 
>        |
>  |        |
>  |   Map is 3D:              0        |
>  |   Number of dblinks:      1        |
>  |        |
>  |         Projection: Projection inconnue        |
>  |               N:    -1178.27114746    S:    -2050.34100516        |
>  |               E:     1841.24981384    W:      780.66696671        |
>  |        |
>  |   Digitization threshold: 0        |
>  |   Comments:        |
>  |        |
> 
> +----------------------------------------------------------------------------+ 
> 
> 
> 
> 
>> Did
>> you use v.digit or v.in.ascii to
>> create the layer? I used the latter
>> when I was working with it.
> 
> I used v.digit.
> 
> Moritz
>