plotting the charge density difference from cube file

[Xun Wang]

Hello,

I am a new user to cp2k and I would like to know how I can plot the atomic 
density difference from the cube file.
In my calculation of He dimer, I added the following lines to my input file 
to get the cube file. 
  
 &E_DENSITY_CUBE 
  
 FILENAME ./rut_density 
  
 &END E_DENSITY_CUBE 

I would like to get a plot as figure 2 in the following 
literature: http://scitation.aip.org/content/aip/journal/jcp/117/24/10.1063/1.1522715

I appreciate your help me with this!


Xun
 
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