[gmx-users] parameters for plotting 2D density map with gmx densmap and xpm2ps

[ABEL Stephane]

Dear all, 

I would like to obtain a 2D density map plot as for instance Fig. 4 in the following paper (DOI 10.1007/s00232-014-9690-8) for a membrane protein inserted in a surfactant micelle with gmx densmap and xpm2ps .  I have few questions 

- Have any of you ever done this type of plot? If yes, how? 
- What parameters for densmap and/or xpm2ps did you use? 
- How did you combine the protein and surfactant xpm files into a single one to obtain the same plot as Fig. 4

Thanks in advance for your help 

Stéphane