[Qgis-user] Raster file format

[Nicolas Cadieux]

Thanks!

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

On May 2, 2015 14:43, Alex Mandel <tech_dev at wildintellect.com> wrote:
>
> 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 
> > _______________________________________________ 
> > Qgis-user mailing list 
> > Qgis-user at lists.osgeo.org 
> > http://lists.osgeo.org/mailman/listinfo/qgis-user 
> > 
>