[Qgis-developer] Re: [Qgis-user] Re: SEXTANTE - using calculator tools from SAGA and GRASS

Victor Olaya volayaf at gmail.com
Thu May 3 00:35:09 PDT 2012


SAGA calculator does not work like that

To include a raster layer in the formula you have to use  single
letters (a is the first one, "b" is the second one...), but not using
the names of the layers that you see in QGIS

I guess that we need more documentation for algorithms, or the user
should have a good knowledge of external tools like this...


2012/5/3 Pedro Venâncio <pedrongvenancio at yahoo.com>:
> Ok, so in relation to SAGA Grid Calculator, I think the mistake was mine. The syntax to use in the formula to refer the layers is g1, g2, ..., gn, from the top to the bottom of the list of "Multiple selection" rasters.
> Remains the question about GRASS r.mapcalculator.
> Thank you and sorry for the noise about SAGA Grid Calculator!
> Best regards,
> Pedro Venâncio
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