A 3-D histogram

    bar3("@guinea_bay.nc", grd=true,
         frame=(annot=1, axes=:WSneZ, title=:ETOPO5, cube=true),
         zaxis=(annot=1000, label="Topography (m)"), fill=:lightgreen,
         lw=:thinnest, proj=:Mercator, figsize=12, zsize=13, view=(200,30))
    text!(text_record([0.1 4.7], "This is the surface of cube"), JZ=true, Z=0,
          attrib=(font=(24,"Helvetica-Bold"),justify=:TL), view=true, show=1)