Hi, For KK transform, you can also try diffkk: http://cars9.uchicago.edu/dafs/diffkk/
Vincent -- Vincent Favre-Nicolin http://vincefn.net Université Joseph Fourier http://www.ujf-grenoble.fr CEA/ Institut Nanosciences & Cryogénie http://inac.cea.fr ObjCryst & Fox http://objcryst.sourceforge.net