Splitting/tiling a raster

[Bart van den Eijnden]

Hi Stefan,

since gdal_translate has the option to select a subwindow (srcwin) from your sourcefile, you can use it to split your raster file into subimages.

http://www.gdal.org/gdal_utilities.html#gdal_translate

After that, you do use gdaltindex to create a tileindex. That part is described in the raster howto:

http://mapserver.gis.umn.edu/doc44/raster-howto.html

Btw, what is the exact reason you want to split up your raster? Performance?

Best regards,
Bart

Bart van den Eijnden
Syncera IT Solutions
Postbus 270
2600 AG  DELFT

tel.nr.: 015-7512436
email: BEN at Syncera-ITSolutions.nl

>>> Stefan Schwarzer <stefan.schwarzer at GRID.UNEP.CH> 07/12/05 11:39am >>>
Hi,

this subject is really not new. But I haven't found any real how-to
for the whole story. Perhaps somebody could clarify the steps needed.
when starting with an image of some larger size and when ending with
a tiled raster. Cause I guess that' what has to be done.
- At least I have now one single big raster. As far as I understood I
need to split the big image into smaller ones. But how?
- And then I can use gdaltindex to build the shapefile to define the
tiles. Right?

Thanks for clarification.