Hi,
A question in a design forum on drawing exact logariphmic spirals in One Well Known Application :-) triggered my interest to a way doing same thing in Inkscape.
In fact Inkscape operates in other terms than all the geometric sources I read so far overnight. Divergence (or Linearity) sounds very much like Ratio, but 1,618 simply won't work for any amount Turns I've tried :) Apparently , if I divide Turns by 0,618 and input the result into Divergence, the resulted spiral will look pretty close to a Fibonacci spiral, but not exactly it. This brings me to a point we I don't quite understand what I'm doing :)
Does Inkscape simply lack documentation to help people do the calculations? Can Inkscape make it easier for users by providing presets that would lock existing Spiral tool's options to some ratio so that one could pick, say, hyperbolic or archimedean or logarithmic spiral and draw as many turns as (s)he wishes?
Alexandre