[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 4, 2015 07:55, "ves nikos [via OSGeo.org]" <ml-node+s1560n5203980h41 at n6.nabble.com> wrote: 

	Tiff is a very robust format if used correctly. Read through gdal's
Creation Properties [0] and add as you see fit at "Save Raster layer
as.." dialog -> "Create Options"  sector
N
[0] http://www.gdal.org/frmt_gtiff.html On Sun, May 3, 2015 at 2:19 AM, Nicolas Cadieux
< [hidden email] > wrote:
> 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 < [hidden email] > 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
>> > [hidden email] 
>> > http://lists.osgeo.org/mailman/listinfo/qgis-user >> >
>>
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