sxstability [view]
      phase_cog [view]
           cog [view]
      I_O [view]
           get_image [view]
           drop_image [view]
      user-supplied-function [view]
      sxheader [view]
      sxtransform2d [view]
           fshift [view]
           sxali2d [view]
           sxshiftali [view]
      sxlocal_ali2d [view]
      sxmref_ali2d [view]
           sxk_means [view]
                sxk_means_stable [view]
           sxk_means_groups [view]