[Qgis-user] Raster file format

[Nick Ves]

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
<nicolas.cadieux at archeotec.ca> 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 <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
>> >
>>
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