&INPUTPP
 /

 &PLOT
    filepp(1) = 'methane_charge'
    iflag = 2
    output_format = 7
    fileout = 'CH4.rho.gpl'
    e1(1) = 0.4, e1(2) = 0.0, e1(3) = 0.0
    e2(1) = 0.0, e2(2) = 0.0, e2(3) = 0.4
    x0(1) = -0.2, x0(2) = 0.0, x0(3) = -0.2
    nx = 100, ny = 100
 /