direction cosine matrix calculation

Discussion created by taihoon on Aug 30, 2010
Latest reply on Sep 5, 2010 by taihoon
Dear all,

I am struggling with the calculation of direction cosine matrix.
My goal is to get eigenvalue for each cell using 3 by 3 window.
eigenvalue will be calculated from the direction cosine matrix. Unfortunately I am good at this kind of stuff.
Please give me a any little tiny of idea for this.

you may see (McKean and Roering, 2004, Geomorphology 57, 331-351) for more clear understanding (I attached part of it because of the amount limit).

Thank you in advance