[Atlas-framework-users] Compressing landsat image

[Stefan Tzeggai]

Am 30.11.2011 15:27, schrieb Lisho:
> Hi Stefan
>
> I was trying to compress a landsat image but it still ended to be
> unsupported when I try to import it into Geopublisher. Do you have perhaps
> or can you recommend any tool to use for compression of images?
>
> Thanks and regards
> Lisho 

Hi Lisho

The answer is simple: http://www.gdal.org/ is the best tool in my optinion.

It is a command line tool though.

The book "Mapping Hacks: Tips & Tools for Electronic Cartography"
(available used at Amazon for < 2$,
http://www.amazon.com/Mapping-Hacks-Tools-Electronic-Cartography/dp/0596007035/)
has good starting documentation.

Many tutorials should also be available online.

Basically to reduce size you want to run a command line like:

  gdal_translate -outsize 50% [source.rasterfile] [target.tif]

where [source.rasterfile] is the location of any raster file you want to
reduce in size.
and [target.tif] is the name of a GeoTiff that will be created.

Also http://gis.stackexchange.com/ is a great place to find answers to
general GIS questions. I am also active there to help:
http://gis.stackexchange.com/users/1230/alfonx

Many Greetings from Bonn,
Steve

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