To plot Silicon Charge density (example01):

1) make a self-consistent calculation (input=si.scf.in,
   output=si.scf.out)

2) run the postprocessing program pp.x (input=si.pp_rho.in, 
   output=si.pp_rho.out) in order to extract a 2D cut of 
   the charge density. See INPUT_PP for details of the input.

3) run plotrho.x program (input=si.plotrho.in, output=si.plotrho.out)
   in order to produce a postscript file: si.rho.ps.


To plot self-energy functional (example06).

1) make a self-consistent calculation (input=si.scf.in,
   output=si.scf.out)

2) Run a GW calculation obtaining Sigma in a full wedge of the IBZ of 
	 a Monkhorst-Pack grid.

3) Run sgwpp/sgwvis.x to generate either a 2d contour plot of the
	 charge density or a full xsf struct file for visualization in 
	 Vesta.