[Qgis-user] how to subtractor add one raster layer to another

[Marco Hugentobler]

This will be possible with the raster calculator in QGIS 1.6 (or already in 
current trunk if you compile from source). Select the menu entry 'Layers'-
>'Raster calculator...'

Regards,
Marco 

Am Montag, 8. November 2010, um 10.44:09 schrieb M.E.Dodd:
> I have two raster layers which have same grid cell size but different
> extent and want to carry out some calculations to produce a third layer
> e.g. with the sum or difference of the other two layers.  Is this possible
> in qgis?


-- 
Dr. Marco Hugentobler
Sourcepole - Linux & Open Source Solutions
Webereistr. 66, CH-8134 Adliswil, Switzerland
marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
Technical Advisor QGIS Project Steering Committee