[magick-users] gradient to transparency

[Christoph P. Kukulies]

I'm seeking for a general solution to allow for producing gradients
from color to transparency either linearly or (even better) after 
some function (exp or other).

Reason behind is producing shadows for images or weblayouts over
their respective background image so that I get a smooth
transition from some opaque shadow to transparency.

Thanks a lot in advance.


--
Chris Christoph P. U. Kukulies