coordinate system fo epw.out?

[iwelland]

Hi,

I would like to plot a 2D heatmap of the epc's in the first BZ (for the hexagonal 2D material WS2). EPW lists the coarse k-grid points in Cartesian coordinates, but I don't know if the epc's for each q-point are for relative or Cartesian coordinates. As far as I can tell, I need to write a script to pull the points and organize them since there appears to be no pre-packaged plotting routine to do so, but I'd like to know the meaning of the coordinates first.

Thanks in advance

[carla.verdi]

Hello,

The q points in the fine grid are written in crystal coordinates in the epw output.

Best,
Carla

[iwelland]

Thanks.