Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The bottommost node is taken as the source of wave input and the ends of the left and right arms are taken as destinations such that Bloch's condition can be applied as qleft = eik1 qbottom and qright = eik2 qbottom. I wish to learn how would an iso-frequency contour plot be plotted post performing the dispersion analysis. Thanks in advance.