[Qgis-user] QGIS Raster Calculator - cannot add two mutually exclusive areas with logical statement because nodata excludes the other's data

[Nicolas Cadieux]

Hi,
To my knowledge, no.  You can automate it via the Processing toolbox in 
a Model which can bulk process the data for you.  (How are you thinking 
of doing the bulk processing?)  From there, you can use the SAGA, GRASS 
or GDAL raster calculators.  Keep in mind that if your layers don't have 
a null value to start with, The QGIS raster calculator it will not 
create one.  If your null value is 0, then the resulting rasters will 
use that as a null value.

Maybe someone else has a bright idea...
Nicolas

Le 2015-06-03 14:41, robertlozar [via OSGeo.org] a écrit :
> Once again, thanks for the reply.  I really appreciate it and do not 
> wish to be difficult, but....
>
> As I originally mentioned I tried the gdal_translate route but I am 
> looking for a way of doing this using the raster calculator as one can 
> do in other GISs.  I didn't state that the reason is, once I get this 
> down right, I will turn over the procedure to be automated by others 
> for bulk processing so I am looking for a means of doing it in one 
> statement.   So my question is, "Does the QGIS raster calculator have 
> this ability?" (rather than as part of the Model Builder).
>
> You see, I am the one around here pushing the use of QGIS our agency's 
> research tool, rather than others.  If I can not figure out a way to 
> do it within the Raster Calculator when most of the other GISs can, 
> well I put at a severe disadvantage.  So please persevere  with me on 
> this.
>
> Thank you, Bob
>
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