[Qgis-user] Logarithmic functions

[magerlin]

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.

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Regards Morten

Qgis 1.7.3 in Win7
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