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[deyulu@yahoo.com]

Dear abinit users:
     I want to visualize the dielectric eigen-modes (ppmodel=3) in real 
space. The   G space to real space FFT can be achieved by using fftwfn.F90, 
similarly as in routines screening.F90 and sigma.F90. In order to view it in 
xcrysden, I need to know the index ordering. Assume a FFT grid nz, ny, nx, my 
feeling is that the data are order according to the same format as the xsf 
format (fourdp.F90), i.e.:
  write(*,*)
  $  (((value(ix,iy,iz),ix=1,nx),iy=1,ny),iz=1,nz)

     Could someone confirm it?

     Thanks
     Deyu

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Deyu Lu (Ph.D)

190 Chemistry Building
University of California, Davis 
One Shields Avenue
Davis, CA 95616
Office phone: (530) 754-9663
Group Webpage: http://angstrom.ucdavis.edu/

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