&DRIFT: CLUSTERING-HISTOGRAMS


iter

  The number of tracks to be generated.

  [By default 200]

bins

  Number of bins in the histograms.

  One can either set the same number of bins for all histograms
  using the BINS keyword, or set a different number for each of
  the 6 histograms that are produced.

  [By default 100]

range

  The range of the histograms is by default determined automatically
  using the first entries of the histogram.

  You may, e.g. for comparison purposes, wish to set the same range
  for all histograms. This can be accomplished with the various RANGE
  options.

  [By default automatic range selection for all histograms.]

KEEP-HISTOGRAMS

  Requests the histograms to be kept in storage when the instruction
  has finished. The histograms will be called as follows:

  ----------------------------------------------------------------
  Name         Description
  ----------------------------------------------------------------
  SIZE         Number of electrons in a cluster
  CLUSTERS     Number of clusters on the track
  DELTA        Distance between track and electrons [cm]
  RANGE        Distance between track start and last electron [cm]
  DE           Total energy loss [MeV]
  ECLUSTER     Energy per cluster [eV]
  ----------------------------------------------------------------

  If (1) the instruction is placed in the body of a DO loop and
  (2) these global variables are used in arithmetic or in IF
  conditions, then you have to declare the global variables before
  the DO loop by assigning them an (arbitrary value). Declaring is
  not required if the variables are only used outside a DO loop,
  e.g. in SAY statements or in procedure calls.

  [The histograms are not kept by default, the setting of this
  option is remembered from one call to the next.]

PLOT-HISTOGRAMS

  This command by default plots the histograms it computes. If this
  is not desirable, e.g. because you only need the histograms as a
  set of globals, then adding NOPLOT-HISTOGRAMS suppresses the plots.

  [The plots are made by default, the setting is remembered from one
  call to the next.]

Keyword index. Formatted on 10/11/98.