[Qgis-user] Raster file format

[Alex Mandel]

Just add Deflate or LZW compression to your tif (both are loseless, JPG
is not). The output files will be 10%-50% the size of the original in
most cases.

See the following post for a comparison of settings.
http://linfiniti.com/2011/05/gdal-efficiency-of-various-compression-algorithms/

Enjoy,
Alex

On 05/02/2015 07:36 AM, Nicolas Cadieux wrote:
> Hi,
> 
> I will be making huge... (No HUGE) DEMs file in QGIS.  I usually use .tif or.tiff (not really sure what the real difference is) but they are large files.
> 
> What would be the best Qgis raster format permitting both smaller disk storage, lossless compression and ease of analysis using the various Qgis plugins? Formats need to accept floats.  I only use one band.
> 
> Thanks for the help.
> 
> Nicolas Cadieux M.Sc.
> Les Entreprises Archéotec inc. 
> 8548, rue Saint-Denis Montréal H2P 2H2
> Téléphone: 514.381.5112  Fax: 514.381.4995
> www.archeotec.ca
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