I am working with traffic noise and since the dB unit for measuring noise is logarithmic I often need the logarithmic function, but it does not seem to exist neither in field calculator nor in Raster Calculator?
In Raster Calculater I can write log(xxx), but it just returns xxx. In field calculator I will get an error if I write log(xxx) or the like. ----- Regards Morten Qgis 1.7.3 in Win7 -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Logarithmic-functions-tp4474344p4474344.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
