On 1/19/07, Illtud Daniel <illtud.daniel at llgc.org.uk> wrote: > However, If I do: > > $image->Fx(expression=>'r/8'); > > In my perl, it makes no change to the image at all. Where am I going > wrong? That may be a bug. Did you try Evaluate instead? $image->Evaluate(value=>8, operator=>"Divide"}; GNS