as.patchwork as.patchwork gglist construct a 'gglist' object gglistGrob This function converts 'gglist' object to grob (i.e. gtable object) insert_left plot-insertion plot_list plot a list of ggplot objects xlab2 display x or y axis label as an ordinary text, so that the label will not be aligned with axis label of another plot xlim2 xlim2