[Qgis-user] Adding alpha band to raster

[Kirk Schmidt]

Hi Nicolas:

I just had an idea, why not use gdal directly?   I know gdalwarp has a 
-dstalpha switch to code null data Assuming this is what you want the 
alpha band for)

Kirk


On 1/21/2022 6:06 PM, Nicolas Cadieux wrote:
> Hi,
>
> I don't see it in the current processing algorithms. I see lot's or 
> r.out... but not that one:(  I guess I could do it in Grass...
>
> Thanks for the idea!
>
> Nicolas
>
> On 2022-01-21 1:37 p.m., Kirk Schmidt wrote:
>> Hi Nicholas:
>>
>> Try r.out.gdal
>>
>> https://grass.osgeo.org/grass78/manuals/r.out.gdal.html
>>
>> Kirk Schmidt
>>
>>
>> On 1/21/2022 2:25 PM, Nicolas Cadieux wrote:
>>> Hi,
>>>
>>> What is the easiest way, in QGIS3, to add an alpha band to a 
>>> raster?  Alpha bands are handy with the georeferencer. Currently, I 
>>> am just adding it in GIMP before I start the georeferencer.
>>>
>>> Thanks
>>>
-- 
Kirk Schmidt, MScF, BScF, RPF
General Manager
Nortek Resource Solutions Inc.
26 Church Road
Sutherlands River, NS
B0K 1W0
Tel (902) 922.3607
Email: kirk at nortekresources.com
Web: www.nortekresources.com