SIMION 8.0 Issues/Bugs/Enhancements

Issue I313 [modify,pa,enhancement,resolved]
  Add Crop function in Modify.

  As of 8.0.4-TEST5, there is a new "Crop" function on the Modify
  screen.  This can be used to "crop" a PA (i.e. discard all but the
  selected volume).  This works on both unrefined and refined
  potential arrays (including refined .PA0 files).  If you crop a .PA0
  file, SIMION asks whether you also want it to crop the corresponding
  electrode solution files (.PA_, .PA1, .PA2, ...) accordingly.

  Cropping refined PAs is particularly useful in that you can at times
  calculate the fields correctly using a full array and then crop the
  volume where ions fly and use only that for ion flying.  This
  reduces memory usage during ion flying. This works quite well in the
  SIMION 8.0.3 "hda" example, in which memory usage at Fly'm can be
  reduced by roughly 10x.

  A cropped PA0 file might not be readable in SIMION versions prior to
  8.0.4-TEST5 due to a small relaxation of restrictions in the PA0 format
  concerning electrodes that no longer exist in the cropped PA0.

  Reported by eloy-2005-12-01
    in modify, allow function to crop arbitrary box or rectangle marked.
    http://www.simion.com/discuss/viewtopic?p=744
  Also mentioned in http://www.simion.com/discuss/viewtopic?p=1703 .

  Implemented in 8.0.4-TEST5.