[Qgis-user] Adding alpha band to raster

[Nicolas Cadieux]

Thanks! I will have a look!

Nicolas

On 2022-01-24 9:33 a.m., Kirk Schmidt wrote:
> 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
>>>>
-- 
Nicolas Cadieux
https://gitlab.com/njacadieux