Dear all, I can draw multicolumn plots by making them separately using AxesGrid position like this. ``` ~~~ grid = AxesGrid( fig, (0.1, 0.1, 0.82, 0.24), ** third row nrows_ncols=(1,3), ) p = yt.ParticleProjectionPlot(ds,'z', (dm_f, 'particle_mass') ,width = (1200, "kpccm"),center=cen, density=True) grid = AxesGrid( fig, (0.1, 0.34, 0.82, 0.24), ** second row nrows_ncols=(1,4), ) p = yt.ParticleProjectionPlot(ds,'z', (dm_f, 'particle_mass') ,width = (1200, "kpccm"),center=cen, density=True) grid = AxesGrid( fig, (0.1, 0.58, 0.82, 0.24), ** first row nrows_ncols=(1,3), ) p = yt.ParticleProjectionPlot(ds,'z', (dm_f, 'particle_mass') ,width = (1200, "kpccm"),center=cen, density=True) ~~~ ``` this is not a simple and complete solution, but It might help. Thanks! HyeonYong