i.rectify histogram files

  Doesn't i.rectify automatically create the histogram files for
the image group that's being rectified ?
  Is it alright to run r.support to create these later ?

  Thankyou,

  Laxmi P. Musunur (LP)
  School of Forestry,
  Auburn University,
  AUBURN AL 36849

  mlp@forestry.auburn.edu