Splitting/tiling a raster

[Stefan Schwarzer]

Thanks Bart for the quick response,

aehh, yes, performance. But perhaps there is no need to split it up?  
Is it that what you mean? Gush, somehow I don't really get it how  
this tiling works, stupid me....

Stef


> 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.
>