[GRASS-user] Raster pyramids

GRASS GRASS user
,
1

Hi everybody,

I just want to know if it's possible in GRASS to make a raster pyramid for images that are quite large (3GB) as it's possible in QGis... And if so, how we can do it ?
And if it's not possible, can we make pyramids in QGis and then view our images in GRASS without problems ??

Thanks

Thierry Gonon
2 Place de l'Eglise
01150 LAGNIEU
Tél : 04 74 34 49 26

2

Thierry Gonon wrote:

Hi everybody,

I just want to know if it's possible in GRASS to make a raster
pyramid for images that are quite large (3GB) as it's possible in
QGis...

Not as in QGIS, but you can use eg. r.mapcalc to create a version of
your original raster at a reduced resolution. Other folks can give you
more guiding about using the recent Glynn's aggregation module in GRASS
6.3 (search recent dev & user archives for 'aggregate'). Take a look at
r.resamp* modules too.

And if so, how we can do it ? And if it's not possible, can
we make pyramids in QGis and then view our images in GRASS without
problems ??

I don't think this is possible now.

Maciek