Evolution of total projected density on (x, y) plane for different configurations of the three-sine-wave simulations. Left, middle, and right columns of panels: quasi one-dimensional set-up, ϵ = (1/6, 1/8); anisotropic set-up, ϵ = (3/4, 1/2); and axisymmetric set-up, ϵ = (1, 1), respectively. Top row of panels: results obtained at early time from high resolution Vlasov runs with n_g = 512 (VLA-Q1D-HR, VLA-ANI2-FHR, and VLA-SYM-HRS in Table 1), to be compared to the second row of panels, which corresponds to the highest resolution PM runs with n_g = n_p = 1024 (PM-Q1D-UHR, PM-ANI2-UHR, and PM-SYM-UHR). Third row of panels: same as the second row, but for a larger subcube. Last two rows of panels: results obtained from the PM runs at mid and late time. The region displayed is only a fraction of the full simulation size, namely L_sub = L/10 for the four top panels and L_sub = L/2.5 for the six bottom panels. The density contributing to the projection comes only from the cubical subvolume of size L_sub.