[Qgis-user] Reqgis 0.10 slow digitizing with grass

[maning sambale]

Hi,

I am using qgis for editing attributes of a grass vector.  The other
layers loaded are 3 GRASS rgb images, a shapefile.
Zoom, pan and saving seems painstakingsly sloow.  After editing a few
attributes I make it a point to save, but it takes a minute or two.

v.info of the vector
 |----------------------------------------------------------------------------|
 |   Type of Map:  vector (level: 2)                                          |
 |                                                                            |
 |   Number of points:       0               Number of areas:      1340       |
 |   Number of lines:        0               Number of islands:    1169       |
 |   Number of boundaries:   1722            Number of faces:      0          |
 |   Number of centroids:    676             Number of kernels:    0          |
 |                                                                            |
 |   Map is 3D:              0                                                |
 |   Number of dblinks:      1                                                |
 |                                                                            |
 |         Projection: x,y (zone 0)                                           |
 |               N:            742824    S:          593797.5                 |
 |               E:            800394    W:            650940                 |
 |                                                                            |
 |   Digitization threshold: 0                                                |
 |   Comments:                                                                |
 |                                                                            |
 +----------------------------------------------------------------------------+


While each grass raster has:
 |----------------------------------------------------------------------------|
 |                                                                            |
 |   Type of Map:  raster               Number of Categories: 32767           |
 |   Data Type:    CELL                                                       |
 |   Rows:         7518                                                       |
 |   Columns:      8504                                                       |
 |   Total Cells:  63933072                                                   |
 |        Projection: UTM (zone 51)                                           |
 |            N:     746814    S:     532551   Res:  28.5                     |
 |            E:     857451    W:     615087   Res:  28.5                     |
 |   Range of data:    min = 0  max = 32767                                   |
 |                                                                            |


I know these are quite big rasters to re-render, but on a  P4 3.06GHz
with 1GB RAM and 2 GB swap is this "normal"?
My CPU runs at 80-90% percent just doing this.

cheers,

maning

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