Plotting

plot_nested_grid(ds[, ax, varname])	Usefull function to plot nested grids, keeping heterogeneous resolution
plot_outcrop(ds_outcrop[, fig, ax, ...])	Usefull function to plot outcrop layers of a marthe (multilayer) grid
plot_veloc_quiver(ds[, ax, xyfreq, ...])	Plot velocity field as quiver