Option ``Spider'' in NTUPLE/SCAN

A graphical scan of ntuples
      hi/file 2 rwn_aptuple.hbook
      nt/print 10
1     ZONE 2 3                                                                                 
4     SET HTYP 245                                                                             
2 3   NT/SCAN 10 OPTION=SA CATEGORY AGE:STEP COST

Each ``spider'' is displayed according to the current zone setting.
When the option S (Spider plot) is specified, each event is represented in a graphical form (R versus PHI plot) to give a multi dimentionnal view of the event. Each variable is represented on a separated axis with a scale ranging from the minimum to the maximum value of the variable. A line joins all the current points on every axis where each point corresponds to the current value of the variable. The ``A'' option allows to display the ``Average'' spider.

The list of variable to be scanned may contain a list of the original variables, expressions of the original variables or/and ranges of variables. A range can be given in the following form:

    :          means all variables (default).
    var1:var2  means from variable var1 to variable var2 included.
    var1:      means from variable var1 to the last.
    :var2      means from variable 1 to variable var2

The Spider plot is drawn according to the histogram attributes (HCOL, HTYP etc ...)

			PAW Tutorial	Last update: 1999/04/01 14.59	Olivier.Couet@Cern.Ch