particle analysis-Feret diameter

Dear all,

I have a question or rather a feature request related to the particle analysis, 
which so far has limited functionality copared to commercial software packages 
in regard to particle size and shape analysis. I have noticed that there is a 
Feret diameter included in the module, but it is not clear at which orientation 
is this Feret measured. Since Feret diameters depend on particle orientation, a 
Feret at a single orientation is virtually useless, particularly when one has 
to deal with elongated particles. Would it be possible to include more Ferets, 
at different angles, and also add an automatic selection of maximum and minimum 
Ferets? This would enable the calculation of the aspect ratio and other 
relevant shape descriptors.

Regards,

K.Kachrimanis.