Hi,


> hi all,
>
>
> I'm using qgis 2.18.10 (code59e0f78) installed from repo in my Ubuntu 17.04.
>
> I have problem with raster calculators algorithms. In particular:
>
>   *   saga (2.3.1) raster calculator - it gives me this error, both using 
> this algorithm in a process and alone:
>
> Error executing algorithm reservoir_effective 'module' object has no 
> attribute 'TYPE_RASTER' See log for more details


this has been fixed. it was something affecting all saga tools with a
multiple input raster layer option. If you install the qgis
2.18-nightly it should be ok.






>
>   *   gdal/ogr raster calculator - it gives this error:
>
> GDAL command output:
>
> Error! Dimensions of file /home/condivisa_A_E/calcoli/1000_ET_pos.tif (600, 
> 562) are different from other files (473, 562). Cannot proceed
>
>   *   r.mapcalc - it doesn't show a filed to set the name of the output file, 
> but only the folder. However it gives this error on the console: ERROR 4: 
> /home/IGG/condivisa_A_E/calcoli/1000_ET_pos.tif;/home/layer_prodotti_da_caricare/Z90_ly.tif:
>  No such file or directory


this is not a QGIS/Processing issue, but a gdal raster calculator limit, see:

http://www.gdal.org/gdal_calc.html

"...Note that all files must have the same dimensions, but no
projection checking is performed"





> The only algorithm currently running seems to be the raster calculator of 
> gdal available as first item in the raster menu.


that actually is the native qgis raster calculator and not the gdal one.


I think that the most unfortunate thing is that we "lost" the GRASS
r.mapcalculator tool in processing, that was available in grass6* but
was not ported to grass7. That was python script based on the powerful
r.mapcalc, that made its use pretty easy. An effort to add r.mapcalc
to Processing/grass7 has been done, but the last time I checked it
wasn't working great, especially on Windows.

cheers!

-- G --
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