tile and overview

[Dylan Beaudette]

Hi -- 

try the command gdal_merge.py:
Usage: gdal_merge.py [-o out_filename] [-of out_format] [-co NAME=VALUE]*
                     [-ps pixelsize_x pixelsize_y] [-separate] [-v] [-pct]
                     [-ul_lr ulx uly lrx lry] [-n nodata_value] [-init value]
                     input_files

note that you have to compile gdal with python support for this to work.

Cheers!

Dylan

On Wednesday 06 October 2004 09:58 am, joerg p wrote:
> hello,
>
> I downloaded several overlapping europe etm+ mosaics, reprojected them
> to geo. Each file is around 1.2 GB. For better performance I know I have
> to tile them and build overviews.
>
> To tile and remove the overlapping, i would like to first combine all
> images and then to tile them.
> It's gonna be a really huge file during this process, around 18 GB, does
> this work?
> Could someone give me an example of this gdal combine command? I can't
> find it.
>
> How many overview steps should I build, is there a rule of thumb?
>
> thanks
> joerg