In the tutorial
http://quantumwise.com/publications/tutorials/item/837-inelastic-transmissionin the script for inelastic transmission spectra you have
# Define energies; take only Fermi energy.
energies = [0.0]*eV
# Define q-points; take only points in first quadrant in (qx,qy) space
numQx = 7
numQy = 7
dQx = 0.5
dQy = 0.5
qx = numpy.linspace(0,dQx,numQx)
qy = numpy.linspace(0,dQy,numQy)
q_points = []
for x in qx:
for y in qy:
q_points.append([float(x),float(y),0.0])
# Define k-points; take only k=(0,0)
k_points = [[0.0,0.0,0.0]]
What prompts the particular choice of numQx = 7, numQy = 7 and k_points = [[0.0,0.0,0.0]]. How will it vary for other materials?